20957240

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{16901}}^1$

素因数の和:16943

約数の個数: 32

約数和(自身を含む): 48677760

約数和(自身を除く): 27720520

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 16901, 33802, 67604, 84505, 135208, 169010, 338020, 523931, 676040, 1047862, 2095724, 2619655, 4191448, 5239310, 10478620, 20957240]

約数ペア:

[(1, 20957240), (2, 10478620), (4, 5239310), (5, 4191448), (8, 2619655), (10, 2095724), (20, 1047862), (31, 676040), (40, 523931), (62, 338020), (124, 169010), (155, 135208), (248, 84505), (310, 67604), (620, 33802), (1240, 16901)]