3131217

素因数分解:

$3^4\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1$

素因数の和:115

約数の個数: 40

約数和(自身を含む): 5111040

約数和(自身を除く): 1979823

約数列:

[1, 3, 9, 27, 29, 31, 43, 81, 87, 93, 129, 261, 279, 387, 783, 837, 899, 1161, 1247, 1333, 2349, 2511, 2697, 3483, 3741, 3999, 8091, 11223, 11997, 24273, 33669, 35991, 38657, 72819, 101007, 107973, 115971, 347913, 1043739, 3131217]

約数ペア:

[(1, 3131217), (3, 1043739), (9, 347913), (27, 115971), (29, 107973), (31, 101007), (43, 72819), (81, 38657), (87, 35991), (93, 33669), (129, 24273), (261, 11997), (279, 11223), (387, 8091), (783, 3999), (837, 3741), (899, 3483), (1161, 2697), (1247, 2511), (1333, 2349)]