31311390

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{239}}^1\times {\mathrm{397}}^1$

素因数の和:657

約数の個数: 64

約数和(自身を含む): 82529280

約数和(自身を除く): 51217890

約数列:

[1, 2, 3, 5, 6, 10, 11, 15, 22, 30, 33, 55, 66, 110, 165, 239, 330, 397, 478, 717, 794, 1191, 1195, 1434, 1985, 2382, 2390, 2629, 3585, 3970, 4367, 5258, 5955, 7170, 7887, 8734, 11910, 13101, 13145, 15774, 21835, 26202, 26290, 39435, 43670, 65505, 78870, 94883, 131010, 189766, 284649, 474415, 569298, 948830, 1043713, 1423245, 2087426, 2846490, 3131139, 5218565, 6262278, 10437130, 15655695, 31311390]

約数ペア:

[(1, 31311390), (2, 15655695), (3, 10437130), (5, 6262278), (6, 5218565), (10, 3131139), (11, 2846490), (15, 2087426), (22, 1423245), (30, 1043713), (33, 948830), (55, 569298), (66, 474415), (110, 284649), (165, 189766), (239, 131010), (330, 94883), (397, 78870), (478, 65505), (717, 43670), (794, 39435), (1191, 26290), (1195, 26202), (1434, 21835), (1985, 15774), (2382, 13145), (2390, 13101), (2629, 11910), (3585, 8734), (3970, 7887), (4367, 7170), (5258, 5955)]