81557776

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{164431}}^1$

素因数の和:164470

約数の個数: 20

約数和(自身を含む): 163116544

約数和(自身を除く): 81558768

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 164431, 328862, 657724, 1315448, 2630896, 5097361, 10194722, 20389444, 40778888, 81557776]

約数ペア:

[(1, 81557776), (2, 40778888), (4, 20389444), (8, 10194722), (16, 5097361), (31, 2630896), (62, 1315448), (124, 657724), (248, 328862), (496, 164431)]