20764360

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{6571}}^1$

素因数の和:6661

約数の個数: 32

約数和(自身を含む): 47318400

約数和(自身を除く): 26554040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 3160, 6571, 13142, 26284, 32855, 52568, 65710, 131420, 262840, 519109, 1038218, 2076436, 2595545, 4152872, 5191090, 10382180, 20764360]

約数ペア:

[(1, 20764360), (2, 10382180), (4, 5191090), (5, 4152872), (8, 2595545), (10, 2076436), (20, 1038218), (40, 519109), (79, 262840), (158, 131420), (316, 65710), (395, 52568), (632, 32855), (790, 26284), (1580, 13142), (3160, 6571)]