20213240

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{16301}}^1$

素因数の和:16343

約数の個数: 32

約数和(自身を含む): 46949760

約数和(自身を除く): 26736520

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 16301, 32602, 65204, 81505, 130408, 163010, 326020, 505331, 652040, 1010662, 2021324, 2526655, 4042648, 5053310, 10106620, 20213240]

約数ペア:

[(1, 20213240), (2, 10106620), (4, 5053310), (5, 4042648), (8, 2526655), (10, 2021324), (20, 1010662), (31, 652040), (40, 505331), (62, 326020), (124, 163010), (155, 130408), (248, 81505), (310, 65204), (620, 32602), (1240, 16301)]