31885659

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{41}}^1$

素因数の和:117

約数の個数: 72

約数和(自身を含む): 56320992

約数和(自身を除く): 24435333

約数列:

[1, 3, 9, 13, 17, 23, 39, 41, 51, 69, 117, 123, 153, 207, 221, 289, 299, 369, 391, 533, 663, 697, 867, 897, 943, 1173, 1599, 1989, 2091, 2601, 2691, 2829, 3519, 3757, 4797, 5083, 6273, 6647, 8487, 9061, 11271, 11849, 12259, 15249, 16031, 19941, 27183, 33813, 35547, 36777, 45747, 48093, 59823, 81549, 86411, 106641, 110331, 144279, 154037, 208403, 259233, 272527, 462111, 625209, 777699, 817581, 1386333, 1875627, 2452743, 3542851, 10628553, 31885659]

約数ペア:

[(1, 31885659), (3, 10628553), (9, 3542851), (13, 2452743), (17, 1875627), (23, 1386333), (39, 817581), (41, 777699), (51, 625209), (69, 462111), (117, 272527), (123, 259233), (153, 208403), (207, 154037), (221, 144279), (289, 110331), (299, 106641), (369, 86411), (391, 81549), (533, 59823), (663, 48093), (697, 45747), (867, 36777), (897, 35547), (943, 33813), (1173, 27183), (1599, 19941), (1989, 16031), (2091, 15249), (2601, 12259), (2691, 11849), (2829, 11271), (3519, 9061), (3757, 8487), (4797, 6647), (5083, 6273)]