81687490

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{331}}^1$

素因数の和:427

約数の個数: 64

約数和(自身を含む): 163503360

約数和(自身を除く): 81815870

約数列:

[1, 2, 5, 10, 23, 29, 37, 46, 58, 74, 115, 145, 185, 230, 290, 331, 370, 662, 667, 851, 1073, 1334, 1655, 1702, 2146, 3310, 3335, 4255, 5365, 6670, 7613, 8510, 9599, 10730, 12247, 15226, 19198, 24494, 24679, 38065, 47995, 49358, 61235, 76130, 95990, 122470, 123395, 220777, 246790, 281681, 355163, 441554, 563362, 710326, 1103885, 1408405, 1775815, 2207770, 2816810, 3551630, 8168749, 16337498, 40843745, 81687490]

約数ペア:

[(1, 81687490), (2, 40843745), (5, 16337498), (10, 8168749), (23, 3551630), (29, 2816810), (37, 2207770), (46, 1775815), (58, 1408405), (74, 1103885), (115, 710326), (145, 563362), (185, 441554), (230, 355163), (290, 281681), (331, 246790), (370, 220777), (662, 123395), (667, 122470), (851, 95990), (1073, 76130), (1334, 61235), (1655, 49358), (1702, 47995), (2146, 38065), (3310, 24679), (3335, 24494), (4255, 19198), (5365, 15226), (6670, 12247), (7613, 10730), (8510, 9599)]