1628293840

素因数分解:

$2^4\times 5^1\times {\mathrm{113}}^1\times {\mathrm{281}}^1\times {\mathrm{641}}^1$

素因数の和:1048

約数の個数: 80

約数和(自身を含む): 3838856976

約数和(自身を除く): 2210563136

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 113, 226, 281, 452, 562, 565, 641, 904, 1124, 1130, 1282, 1405, 1808, 2248, 2260, 2564, 2810, 3205, 4496, 4520, 5128, 5620, 6410, 9040, 10256, 11240, 12820, 22480, 25640, 31753, 51280, 63506, 72433, 127012, 144866, 158765, 180121, 254024, 289732, 317530, 360242, 362165, 508048, 579464, 635060, 720484, 724330, 900605, 1158928, 1270120, 1440968, 1448660, 1801210, 2540240, 2881936, 2897320, 3602420, 5794640, 7204840, 14409680, 20353673, 40707346, 81414692, 101768365, 162829384, 203536730, 325658768, 407073460, 814146920, 1628293840]

約数ペア:

[(1, 1628293840), (2, 814146920), (4, 407073460), (5, 325658768), (8, 203536730), (10, 162829384), (16, 101768365), (20, 81414692), (40, 40707346), (80, 20353673), (113, 14409680), (226, 7204840), (281, 5794640), (452, 3602420), (562, 2897320), (565, 2881936), (641, 2540240), (904, 1801210), (1124, 1448660), (1130, 1440968), (1282, 1270120), (1405, 1158928), (1808, 900605), (2248, 724330), (2260, 720484), (2564, 635060), (2810, 579464), (3205, 508048), (4496, 362165), (4520, 360242), (5128, 317530), (5620, 289732), (6410, 254024), (9040, 180121), (10256, 158765), (11240, 144866), (12820, 127012), (22480, 72433), (25640, 63506), (31753, 51280)]