20214520

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{6397}}^1$

素因数の和:6487

約数の個数: 32

約数和(自身を含む): 46065600

約数和(自身を除く): 25851080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 3160, 6397, 12794, 25588, 31985, 51176, 63970, 127940, 255880, 505363, 1010726, 2021452, 2526815, 4042904, 5053630, 10107260, 20214520]

約数ペア:

[(1, 20214520), (2, 10107260), (4, 5053630), (5, 4042904), (8, 2526815), (10, 2021452), (20, 1010726), (40, 505363), (79, 255880), (158, 127940), (316, 63970), (395, 51176), (632, 31985), (790, 25588), (1580, 12794), (3160, 6397)]