668728876

素因数分解:

$2^2\times {\mathrm{67}}^1\times {\mathrm{1009}}^1\times {\mathrm{2473}}^1$

素因数の和:3553

約数の個数: 24

約数和(自身を含む): 1189400240

約数和(自身を除く): 520671364

約数列:

[1, 2, 4, 67, 134, 268, 1009, 2018, 2473, 4036, 4946, 9892, 67603, 135206, 165691, 270412, 331382, 662764, 2495257, 4990514, 9981028, 167182219, 334364438, 668728876]

約数ペア:

[(1, 668728876), (2, 334364438), (4, 167182219), (67, 9981028), (134, 4990514), (268, 2495257), (1009, 662764), (2018, 331382), (2473, 270412), (4036, 165691), (4946, 135206), (9892, 67603)]