31481658

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^2\times {\mathrm{79}}^1\times {\mathrm{131}}^1$

素因数の和:244

約数の個数: 72

約数和(自身を含む): 75366720

約数和(自身を除く): 43885062

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 78, 79, 117, 131, 158, 169, 234, 237, 262, 338, 393, 474, 507, 711, 786, 1014, 1027, 1179, 1422, 1521, 1703, 2054, 2358, 3042, 3081, 3406, 5109, 6162, 9243, 10218, 10349, 13351, 15327, 18486, 20698, 22139, 26702, 30654, 31047, 40053, 44278, 62094, 66417, 80106, 93141, 120159, 132834, 134537, 186282, 199251, 240318, 269074, 398502, 403611, 807222, 1210833, 1748981, 2421666, 3497962, 5246943, 10493886, 15740829, 31481658]

約数ペア:

[(1, 31481658), (2, 15740829), (3, 10493886), (6, 5246943), (9, 3497962), (13, 2421666), (18, 1748981), (26, 1210833), (39, 807222), (78, 403611), (79, 398502), (117, 269074), (131, 240318), (158, 199251), (169, 186282), (234, 134537), (237, 132834), (262, 120159), (338, 93141), (393, 80106), (474, 66417), (507, 62094), (711, 44278), (786, 40053), (1014, 31047), (1027, 30654), (1179, 26702), (1422, 22139), (1521, 20698), (1703, 18486), (2054, 15327), (2358, 13351), (3042, 10349), (3081, 10218), (3406, 9243), (5109, 6162)]