31731778

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{269}}^1\times {\mathrm{349}}^1$

素因数の和:646

約数の個数: 24

約数和(自身を含む): 51880500

約数和(自身を除く): 20148722

約数列:

[1, 2, 13, 26, 169, 269, 338, 349, 538, 698, 3497, 4537, 6994, 9074, 45461, 58981, 90922, 93881, 117962, 187762, 1220453, 2440906, 15865889, 31731778]

約数ペア:

[(1, 31731778), (2, 15865889), (13, 2440906), (26, 1220453), (169, 187762), (269, 117962), (338, 93881), (349, 90922), (538, 58981), (698, 45461), (3497, 9074), (4537, 6994)]