201551090

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{239}}^1\times {\mathrm{499}}^1$

素因数の和:771

約数の個数: 48

約数和(自身を含む): 395280000

約数和(自身を除く): 193728910

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 239, 338, 478, 499, 845, 998, 1195, 1690, 2390, 2495, 3107, 4990, 6214, 6487, 12974, 15535, 31070, 32435, 40391, 64870, 80782, 84331, 119261, 168662, 201955, 238522, 403910, 421655, 596305, 843310, 1192610, 1550393, 3100786, 7751965, 15503930, 20155109, 40310218, 100775545, 201551090]

約数ペア:

[(1, 201551090), (2, 100775545), (5, 40310218), (10, 20155109), (13, 15503930), (26, 7751965), (65, 3100786), (130, 1550393), (169, 1192610), (239, 843310), (338, 596305), (478, 421655), (499, 403910), (845, 238522), (998, 201955), (1195, 168662), (1690, 119261), (2390, 84331), (2495, 80782), (3107, 64870), (4990, 40391), (6214, 32435), (6487, 31070), (12974, 15535)]