20739100

素因数分解:

$2^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{127}}^1$

素因数の和:235

約数の個数: 72

約数和(自身を含む): 47996928

約数和(自身を除く): 27257828

約数列:

[1, 2, 4, 5, 10, 20, 23, 25, 46, 50, 71, 92, 100, 115, 127, 142, 230, 254, 284, 355, 460, 508, 575, 635, 710, 1150, 1270, 1420, 1633, 1775, 2300, 2540, 2921, 3175, 3266, 3550, 5842, 6350, 6532, 7100, 8165, 9017, 11684, 12700, 14605, 16330, 18034, 29210, 32660, 36068, 40825, 45085, 58420, 73025, 81650, 90170, 146050, 163300, 180340, 207391, 225425, 292100, 414782, 450850, 829564, 901700, 1036955, 2073910, 4147820, 5184775, 10369550, 20739100]

約数ペア:

[(1, 20739100), (2, 10369550), (4, 5184775), (5, 4147820), (10, 2073910), (20, 1036955), (23, 901700), (25, 829564), (46, 450850), (50, 414782), (71, 292100), (92, 225425), (100, 207391), (115, 180340), (127, 163300), (142, 146050), (230, 90170), (254, 81650), (284, 73025), (355, 58420), (460, 45085), (508, 40825), (575, 36068), (635, 32660), (710, 29210), (1150, 18034), (1270, 16330), (1420, 14605), (1633, 12700), (1775, 11684), (2300, 9017), (2540, 8165), (2921, 7100), (3175, 6532), (3266, 6350), (3550, 5842)]