20647360

素因数分解:

$2^6\times 5^1\times {\mathrm{113}}^1\times {\mathrm{571}}^1$

素因数の和:701

約数の個数: 56

約数和(自身を含む): 49688496

約数和(自身を除く): 29041136

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 113, 160, 226, 320, 452, 565, 571, 904, 1130, 1142, 1808, 2260, 2284, 2855, 3616, 4520, 4568, 5710, 7232, 9040, 9136, 11420, 18080, 18272, 22840, 36160, 36544, 45680, 64523, 91360, 129046, 182720, 258092, 322615, 516184, 645230, 1032368, 1290460, 2064736, 2580920, 4129472, 5161840, 10323680, 20647360]

約数ペア:

[(1, 20647360), (2, 10323680), (4, 5161840), (5, 4129472), (8, 2580920), (10, 2064736), (16, 1290460), (20, 1032368), (32, 645230), (40, 516184), (64, 322615), (80, 258092), (113, 182720), (160, 129046), (226, 91360), (320, 64523), (452, 45680), (565, 36544), (571, 36160), (904, 22840), (1130, 18272), (1142, 18080), (1808, 11420), (2260, 9136), (2284, 9040), (2855, 7232), (3616, 5710), (4520, 4568)]