18638750

素因数分解:

$2^1\times 5^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1$

素因数の和:103

約数の個数: 80

約数和(自身を含む): 39887232

約数和(自身を除く): 21248482

約数列:

[1, 2, 5, 10, 13, 25, 26, 31, 37, 50, 62, 65, 74, 125, 130, 155, 185, 250, 310, 325, 370, 403, 481, 625, 650, 775, 806, 925, 962, 1147, 1250, 1550, 1625, 1850, 2015, 2294, 2405, 3250, 3875, 4030, 4625, 4810, 5735, 7750, 8125, 9250, 10075, 11470, 12025, 14911, 16250, 19375, 20150, 23125, 24050, 28675, 29822, 38750, 46250, 50375, 57350, 60125, 74555, 100750, 120250, 143375, 149110, 251875, 286750, 300625, 372775, 503750, 601250, 716875, 745550, 1433750, 1863875, 3727750, 9319375, 18638750]

約数ペア:

[(1, 18638750), (2, 9319375), (5, 3727750), (10, 1863875), (13, 1433750), (25, 745550), (26, 716875), (31, 601250), (37, 503750), (50, 372775), (62, 300625), (65, 286750), (74, 251875), (125, 149110), (130, 143375), (155, 120250), (185, 100750), (250, 74555), (310, 60125), (325, 57350), (370, 50375), (403, 46250), (481, 38750), (625, 29822), (650, 28675), (775, 24050), (806, 23125), (925, 20150), (962, 19375), (1147, 16250), (1250, 14911), (1550, 12025), (1625, 11470), (1850, 10075), (2015, 9250), (2294, 8125), (2405, 7750), (3250, 5735), (3875, 4810), (4030, 4625)]