31857345

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{59}}^1\times {\mathrm{71}}^1$

素因数の和:167

約数の個数: 72

約数和(自身を含む): 61663680

約数和(自身を除く): 29806335

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 59, 65, 71, 117, 169, 177, 195, 213, 295, 355, 507, 531, 585, 639, 767, 845, 885, 923, 1065, 1521, 2301, 2535, 2655, 2769, 3195, 3835, 4189, 4615, 6903, 7605, 8307, 9971, 11505, 11999, 12567, 13845, 20945, 29913, 34515, 35997, 37701, 41535, 49855, 54457, 59995, 62835, 89739, 107991, 149565, 163371, 179985, 188505, 272285, 448695, 490113, 539955, 707941, 816855, 2123823, 2450565, 3539705, 6371469, 10619115, 31857345]

約数ペア:

[(1, 31857345), (3, 10619115), (5, 6371469), (9, 3539705), (13, 2450565), (15, 2123823), (39, 816855), (45, 707941), (59, 539955), (65, 490113), (71, 448695), (117, 272285), (169, 188505), (177, 179985), (195, 163371), (213, 149565), (295, 107991), (355, 89739), (507, 62835), (531, 59995), (585, 54457), (639, 49855), (767, 41535), (845, 37701), (885, 35997), (923, 34515), (1065, 29913), (1521, 20945), (2301, 13845), (2535, 12567), (2655, 11999), (2769, 11505), (3195, 9971), (3835, 8307), (4189, 7605), (4615, 6903)]