20925320

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{40241}}^1$

素因数の和:40265

約数の個数: 32

約数和(自身を含む): 50704920

約数和(自身を除く): 29779600

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 40241, 80482, 160964, 201205, 321928, 402410, 523133, 804820, 1046266, 1609640, 2092532, 2615665, 4185064, 5231330, 10462660, 20925320]

約数ペア:

[(1, 20925320), (2, 10462660), (4, 5231330), (5, 4185064), (8, 2615665), (10, 2092532), (13, 1609640), (20, 1046266), (26, 804820), (40, 523133), (52, 402410), (65, 321928), (104, 201205), (130, 160964), (260, 80482), (520, 40241)]