20177950

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{839}}^1$

素因数の和:901

約数の個数: 48

約数和(自身を含む): 41559840

約数和(自身を除く): 21381890

約数列:

[1, 2, 5, 10, 13, 25, 26, 37, 50, 65, 74, 130, 185, 325, 370, 481, 650, 839, 925, 962, 1678, 1850, 2405, 4195, 4810, 8390, 10907, 12025, 20975, 21814, 24050, 31043, 41950, 54535, 62086, 109070, 155215, 272675, 310430, 403559, 545350, 776075, 807118, 1552150, 2017795, 4035590, 10088975, 20177950]

約数ペア:

[(1, 20177950), (2, 10088975), (5, 4035590), (10, 2017795), (13, 1552150), (25, 807118), (26, 776075), (37, 545350), (50, 403559), (65, 310430), (74, 272675), (130, 155215), (185, 109070), (325, 62086), (370, 54535), (481, 41950), (650, 31043), (839, 24050), (925, 21814), (962, 20975), (1678, 12025), (1850, 10907), (2405, 8390), (4195, 4810)]