21381020640

素因数分解:

$2^5\times 3^2\times 5^1\times 7^2\times {\mathrm{303019}}^1$

素因数の和:303054

約数の個数: 216

約数和(自身を含む): 84875295960

約数和(自身を除く): 63494275320

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 49, 56, 60, 63, 70, 72, 80, 84, 90, 96, 98, 105, 112, 120, 126, 140, 144, 147, 160, 168, 180, 196, 210, 224, 240, 245, 252, 280, 288, 294, 315, 336, 360, 392, 420, 441, 480, 490, 504, 560, 588, 630, 672, 720, 735, 784, 840, 882, 980, 1008, 1120, 1176, 1260, 1440, 1470, 1568, 1680, 1764, 1960, 2016, 2205, 2352, 2520, 2940, 3360, 3528, 3920, 4410, 4704, 5040, 5880, 7056, 7840, 8820, 10080, 11760, 14112, 17640, 23520, 35280, 70560, 303019, 606038, 909057, 1212076, 1515095, 1818114, 2121133, 2424152, 2727171, 3030190, 3636228, 4242266, 4545285, 4848304, 5454342, 6060380, 6363399, 7272456, 8484532, 9090570, 9696608, 10605665, 10908684, 12120760, 12726798, 13635855, 14544912, 14847931, 16969064, 18181140, 19090197, 21211330, 21817368, 24241520, 25453596, 27271710, 29089824, 29695862, 31816995, 33938128, 36362280, 38180394, 42422660, 43634736, 44543793, 48483040, 50907192, 54543420, 59391724, 63633990, 67876256, 72724560, 74239655, 76360788, 84845320, 87269472, 89087586, 95450985, 101814384, 109086840, 118783448, 127267980, 133631379, 145449120, 148479310, 152721576, 169690640, 178175172, 190901970, 203628768, 218173680, 222718965, 237566896, 254535960, 267262758, 296958620, 305443152, 339381280, 356350344, 381803940, 436347360, 445437930, 475133792, 509071920, 534525516, 593917240, 610886304, 668156895, 712700688, 763607880, 890875860, 1018143840, 1069051032, 1187834480, 1336313790, 1425401376, 1527215760, 1781751720, 2138102064, 2375668960, 2672627580, 3054431520, 3563503440, 4276204128, 5345255160, 7127006880, 10690510320, 21381020640]

約数ペア:

[(1, 21381020640), (2, 10690510320), (3, 7127006880), (4, 5345255160), (5, 4276204128), (6, 3563503440), (7, 3054431520), (8, 2672627580), (9, 2375668960), (10, 2138102064), (12, 1781751720), (14, 1527215760), (15, 1425401376), (16, 1336313790), (18, 1187834480), (20, 1069051032), (21, 1018143840), (24, 890875860), (28, 763607880), (30, 712700688), (32, 668156895), (35, 610886304), (36, 593917240), (40, 534525516), (42, 509071920), (45, 475133792), (48, 445437930), (49, 436347360), (56, 381803940), (60, 356350344), (63, 339381280), (70, 305443152), (72, 296958620), (80, 267262758), (84, 254535960), (90, 237566896), (96, 222718965), (98, 218173680), (105, 203628768), (112, 190901970), (120, 178175172), (126, 169690640), (140, 152721576), (144, 148479310), (147, 145449120), (160, 133631379), (168, 127267980), (180, 118783448), (196, 109086840), (210, 101814384), (224, 95450985), (240, 89087586), (245, 87269472), (252, 84845320), (280, 76360788), (288, 74239655), (294, 72724560), (315, 67876256), (336, 63633990), (360, 59391724), (392, 54543420), (420, 50907192), (441, 48483040), (480, 44543793), (490, 43634736), (504, 42422660), (560, 38180394), (588, 36362280), (630, 33938128), (672, 31816995), (720, 29695862), (735, 29089824), (784, 27271710), (840, 25453596), (882, 24241520), (980, 21817368), (1008, 21211330), (1120, 19090197), (1176, 18181140), (1260, 16969064), (1440, 14847931), (1470, 14544912), (1568, 13635855), (1680, 12726798), (1764, 12120760), (1960, 10908684), (2016, 10605665), (2205, 9696608), (2352, 9090570), (2520, 8484532), (2940, 7272456), (3360, 6363399), (3528, 6060380), (3920, 5454342), (4410, 4848304), (4704, 4545285), (5040, 4242266), (5880, 3636228), (7056, 3030190), (7840, 2727171), (8820, 2424152), (10080, 2121133), (11760, 1818114), (14112, 1515095), (17640, 1212076), (23520, 909057), (35280, 606038), (70560, 303019)]