21524720

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{17}}^2\times {\mathrm{19}}^1$

素因数の和:80

約数の個数: 180

約数和(自身を含む): 65096280

約数和(自身を除く): 43571560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 19, 20, 28, 34, 35, 38, 40, 49, 56, 68, 70, 76, 80, 85, 95, 98, 112, 119, 133, 136, 140, 152, 170, 190, 196, 238, 245, 266, 272, 280, 289, 304, 323, 340, 380, 392, 476, 490, 532, 560, 578, 595, 646, 665, 680, 760, 784, 833, 931, 952, 980, 1064, 1156, 1190, 1292, 1330, 1360, 1445, 1520, 1615, 1666, 1862, 1904, 1960, 2023, 2128, 2261, 2312, 2380, 2584, 2660, 2890, 3230, 3332, 3724, 3920, 4046, 4165, 4522, 4624, 4655, 4760, 5168, 5320, 5491, 5780, 6460, 6664, 7448, 8092, 8330, 9044, 9310, 9520, 10115, 10640, 10982, 11305, 11560, 12920, 13328, 14161, 14896, 15827, 16184, 16660, 18088, 18620, 20230, 21964, 22610, 23120, 25840, 27455, 28322, 31654, 32368, 33320, 36176, 37240, 38437, 40460, 43928, 45220, 54910, 56644, 63308, 66640, 70805, 74480, 76874, 79135, 80920, 87856, 90440, 109820, 113288, 126616, 141610, 153748, 158270, 161840, 180880, 192185, 219640, 226576, 253232, 269059, 283220, 307496, 316540, 384370, 439280, 538118, 566440, 614992, 633080, 768740, 1076236, 1132880, 1266160, 1345295, 1537480, 2152472, 2690590, 3074960, 4304944, 5381180, 10762360, 21524720]

約数ペア:

[(1, 21524720), (2, 10762360), (4, 5381180), (5, 4304944), (7, 3074960), (8, 2690590), (10, 2152472), (14, 1537480), (16, 1345295), (17, 1266160), (19, 1132880), (20, 1076236), (28, 768740), (34, 633080), (35, 614992), (38, 566440), (40, 538118), (49, 439280), (56, 384370), (68, 316540), (70, 307496), (76, 283220), (80, 269059), (85, 253232), (95, 226576), (98, 219640), (112, 192185), (119, 180880), (133, 161840), (136, 158270), (140, 153748), (152, 141610), (170, 126616), (190, 113288), (196, 109820), (238, 90440), (245, 87856), (266, 80920), (272, 79135), (280, 76874), (289, 74480), (304, 70805), (323, 66640), (340, 63308), (380, 56644), (392, 54910), (476, 45220), (490, 43928), (532, 40460), (560, 38437), (578, 37240), (595, 36176), (646, 33320), (665, 32368), (680, 31654), (760, 28322), (784, 27455), (833, 25840), (931, 23120), (952, 22610), (980, 21964), (1064, 20230), (1156, 18620), (1190, 18088), (1292, 16660), (1330, 16184), (1360, 15827), (1445, 14896), (1520, 14161), (1615, 13328), (1666, 12920), (1862, 11560), (1904, 11305), (1960, 10982), (2023, 10640), (2128, 10115), (2261, 9520), (2312, 9310), (2380, 9044), (2584, 8330), (2660, 8092), (2890, 7448), (3230, 6664), (3332, 6460), (3724, 5780), (3920, 5491), (4046, 5320), (4165, 5168), (4522, 4760), (4624, 4655)]