20464360

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{53}}^1\times {\mathrm{197}}^1$

素因数の和:275

約数の個数: 96

約数和(自身を含む): 54849960

約数和(自身を除く): 34385600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 53, 56, 70, 98, 106, 140, 196, 197, 212, 245, 265, 280, 371, 392, 394, 424, 490, 530, 742, 788, 980, 985, 1060, 1379, 1484, 1576, 1855, 1960, 1970, 2120, 2597, 2758, 2968, 3710, 3940, 5194, 5516, 6895, 7420, 7880, 9653, 10388, 10441, 11032, 12985, 13790, 14840, 19306, 20776, 20882, 25970, 27580, 38612, 41764, 48265, 51940, 52205, 55160, 73087, 77224, 83528, 96530, 103880, 104410, 146174, 193060, 208820, 292348, 365435, 386120, 417640, 511609, 584696, 730870, 1023218, 1461740, 2046436, 2558045, 2923480, 4092872, 5116090, 10232180, 20464360]

約数ペア:

[(1, 20464360), (2, 10232180), (4, 5116090), (5, 4092872), (7, 2923480), (8, 2558045), (10, 2046436), (14, 1461740), (20, 1023218), (28, 730870), (35, 584696), (40, 511609), (49, 417640), (53, 386120), (56, 365435), (70, 292348), (98, 208820), (106, 193060), (140, 146174), (196, 104410), (197, 103880), (212, 96530), (245, 83528), (265, 77224), (280, 73087), (371, 55160), (392, 52205), (394, 51940), (424, 48265), (490, 41764), (530, 38612), (742, 27580), (788, 25970), (980, 20882), (985, 20776), (1060, 19306), (1379, 14840), (1484, 13790), (1576, 12985), (1855, 11032), (1960, 10441), (1970, 10388), (2120, 9653), (2597, 7880), (2758, 7420), (2968, 6895), (3710, 5516), (3940, 5194)]