19444100

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{14957}}^1$

素因数の和:14984

約数の個数: 36

約数和(自身を含む): 45442404

約数和(自身を除く): 25998304

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 260, 325, 650, 1300, 14957, 29914, 59828, 74785, 149570, 194441, 299140, 373925, 388882, 747850, 777764, 972205, 1495700, 1944410, 3888820, 4861025, 9722050, 19444100]

約数ペア:

[(1, 19444100), (2, 9722050), (4, 4861025), (5, 3888820), (10, 1944410), (13, 1495700), (20, 972205), (25, 777764), (26, 747850), (50, 388882), (52, 373925), (65, 299140), (100, 194441), (130, 149570), (260, 74785), (325, 59828), (650, 29914), (1300, 14957)]