19874920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{1033}}^1$

素因数の和:1094

約数の個数: 64

約数和(自身を含む): 49507920

約数和(自身を除く): 29633000

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 37, 40, 52, 65, 74, 104, 130, 148, 185, 260, 296, 370, 481, 520, 740, 962, 1033, 1480, 1924, 2066, 2405, 3848, 4132, 4810, 5165, 8264, 9620, 10330, 13429, 19240, 20660, 26858, 38221, 41320, 53716, 67145, 76442, 107432, 134290, 152884, 191105, 268580, 305768, 382210, 496873, 537160, 764420, 993746, 1528840, 1987492, 2484365, 3974984, 4968730, 9937460, 19874920]

約数ペア:

[(1, 19874920), (2, 9937460), (4, 4968730), (5, 3974984), (8, 2484365), (10, 1987492), (13, 1528840), (20, 993746), (26, 764420), (37, 537160), (40, 496873), (52, 382210), (65, 305768), (74, 268580), (104, 191105), (130, 152884), (148, 134290), (185, 107432), (260, 76442), (296, 67145), (370, 53716), (481, 41320), (520, 38221), (740, 26858), (962, 20660), (1033, 19240), (1480, 13429), (1924, 10330), (2066, 9620), (2405, 8264), (3848, 5165), (4132, 4810)]