20191920

素因数分解:

$2^4\times 3^1\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{101}}^1$

素因数の和:148

約数の個数: 240

約数和(自身を含む): 77861088

約数和(自身を除く): 57669168

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 17, 20, 21, 24, 28, 30, 34, 35, 40, 42, 48, 49, 51, 56, 60, 68, 70, 80, 84, 85, 98, 101, 102, 105, 112, 119, 120, 136, 140, 147, 168, 170, 196, 202, 204, 210, 238, 240, 245, 255, 272, 280, 294, 303, 336, 340, 357, 392, 404, 408, 420, 476, 490, 505, 510, 560, 588, 595, 606, 680, 707, 714, 735, 784, 808, 816, 833, 840, 952, 980, 1010, 1020, 1176, 1190, 1212, 1360, 1414, 1428, 1470, 1515, 1616, 1666, 1680, 1717, 1785, 1904, 1960, 2020, 2040, 2121, 2352, 2380, 2424, 2499, 2828, 2856, 2940, 3030, 3332, 3434, 3535, 3570, 3920, 4040, 4080, 4165, 4242, 4760, 4848, 4949, 4998, 5151, 5656, 5712, 5880, 6060, 6664, 6868, 7070, 7140, 8080, 8330, 8484, 8585, 9520, 9898, 9996, 10302, 10605, 11312, 11760, 12019, 12120, 12495, 13328, 13736, 14140, 14280, 14847, 16660, 16968, 17170, 19796, 19992, 20604, 21210, 24038, 24240, 24745, 24990, 25755, 27472, 28280, 28560, 29694, 33320, 33936, 34340, 36057, 39592, 39984, 41208, 42420, 48076, 49490, 49980, 51510, 56560, 59388, 60095, 66640, 68680, 72114, 74235, 79184, 82416, 84133, 84840, 96152, 98980, 99960, 103020, 118776, 120190, 137360, 144228, 148470, 168266, 169680, 180285, 192304, 197960, 199920, 206040, 237552, 240380, 252399, 288456, 296940, 336532, 360570, 395920, 412080, 420665, 480760, 504798, 576912, 593880, 673064, 721140, 841330, 961520, 1009596, 1187760, 1261995, 1346128, 1442280, 1682660, 2019192, 2523990, 2884560, 3365320, 4038384, 5047980, 6730640, 10095960, 20191920]

約数ペア:

[(1, 20191920), (2, 10095960), (3, 6730640), (4, 5047980), (5, 4038384), (6, 3365320), (7, 2884560), (8, 2523990), (10, 2019192), (12, 1682660), (14, 1442280), (15, 1346128), (16, 1261995), (17, 1187760), (20, 1009596), (21, 961520), (24, 841330), (28, 721140), (30, 673064), (34, 593880), (35, 576912), (40, 504798), (42, 480760), (48, 420665), (49, 412080), (51, 395920), (56, 360570), (60, 336532), (68, 296940), (70, 288456), (80, 252399), (84, 240380), (85, 237552), (98, 206040), (101, 199920), (102, 197960), (105, 192304), (112, 180285), (119, 169680), (120, 168266), (136, 148470), (140, 144228), (147, 137360), (168, 120190), (170, 118776), (196, 103020), (202, 99960), (204, 98980), (210, 96152), (238, 84840), (240, 84133), (245, 82416), (255, 79184), (272, 74235), (280, 72114), (294, 68680), (303, 66640), (336, 60095), (340, 59388), (357, 56560), (392, 51510), (404, 49980), (408, 49490), (420, 48076), (476, 42420), (490, 41208), (505, 39984), (510, 39592), (560, 36057), (588, 34340), (595, 33936), (606, 33320), (680, 29694), (707, 28560), (714, 28280), (735, 27472), (784, 25755), (808, 24990), (816, 24745), (833, 24240), (840, 24038), (952, 21210), (980, 20604), (1010, 19992), (1020, 19796), (1176, 17170), (1190, 16968), (1212, 16660), (1360, 14847), (1414, 14280), (1428, 14140), (1470, 13736), (1515, 13328), (1616, 12495), (1666, 12120), (1680, 12019), (1717, 11760), (1785, 11312), (1904, 10605), (1960, 10302), (2020, 9996), (2040, 9898), (2121, 9520), (2352, 8585), (2380, 8484), (2424, 8330), (2499, 8080), (2828, 7140), (2856, 7070), (2940, 6868), (3030, 6664), (3332, 6060), (3434, 5880), (3535, 5712), (3570, 5656), (3920, 5151), (4040, 4998), (4080, 4949), (4165, 4848), (4242, 4760)]