20740804520

素因数分解:

$2^3\times 5^1\times {\mathrm{518520113}}^1$

素因数の和:518520124

約数の個数: 16

約数和(自身を含む): 46666810260

約数和(自身を除く): 25926005740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 518520113, 1037040226, 2074080452, 2592600565, 4148160904, 5185201130, 10370402260, 20740804520]

約数ペア:

[(1, 20740804520), (2, 10370402260), (4, 5185201130), (5, 4148160904), (8, 2592600565), (10, 2074080452), (20, 1037040226), (40, 518520113)]