168654020

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{138241}}^1$

素因数の和:138311

約数の個数: 24

約数和(自身を含む): 359982168

約数和(自身を除く): 191328148

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 138241, 276482, 552964, 691205, 1382410, 2764820, 8432701, 16865402, 33730804, 42163505, 84327010, 168654020]

約数ペア:

[(1, 168654020), (2, 84327010), (4, 42163505), (5, 33730804), (10, 16865402), (20, 8432701), (61, 2764820), (122, 1382410), (244, 691205), (305, 552964), (610, 276482), (1220, 138241)]