257943753

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{421}}^1\times {\mathrm{3583}}^1$

素因数の和:4029

約数の個数: 24

約数和(自身を含む): 393236480

約数和(自身を除く): 135292727

約数列:

[1, 3, 9, 19, 57, 171, 421, 1263, 3583, 3789, 7999, 10749, 23997, 32247, 68077, 71991, 204231, 612693, 1508443, 4525329, 13575987, 28660417, 85981251, 257943753]

約数ペア:

[(1, 257943753), (3, 85981251), (9, 28660417), (19, 13575987), (57, 4525329), (171, 1508443), (421, 612693), (1263, 204231), (3583, 71991), (3789, 68077), (7999, 32247), (10749, 23997)]