640744401

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{109}}^1\times {\mathrm{3361}}^1$

素因数の和:3537

約数の個数: 32

約数和(自身を含む): 958573440

約数和(自身を除く): 317829039

約数列:

[1, 3, 11, 33, 53, 109, 159, 327, 583, 1199, 1749, 3361, 3597, 5777, 10083, 17331, 36971, 63547, 110913, 178133, 190641, 366349, 534399, 1099047, 1959463, 4029839, 5878389, 12089517, 19416497, 58249491, 213581467, 640744401]

約数ペア:

[(1, 640744401), (3, 213581467), (11, 58249491), (33, 19416497), (53, 12089517), (109, 5878389), (159, 4029839), (327, 1959463), (583, 1099047), (1199, 534399), (1749, 366349), (3361, 190641), (3597, 178133), (5777, 110913), (10083, 63547), (17331, 36971)]