2518750

素因数分解:

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

素因数の和:71

約数の個数: 48

約数和(自身を含む): 5249664

約数和(自身を除く): 2730914

約数列:

[1, 2, 5, 10, 13, 25, 26, 31, 50, 62, 65, 125, 130, 155, 250, 310, 325, 403, 625, 650, 775, 806, 1250, 1550, 1625, 2015, 3125, 3250, 3875, 4030, 6250, 7750, 8125, 10075, 16250, 19375, 20150, 38750, 40625, 50375, 81250, 96875, 100750, 193750, 251875, 503750, 1259375, 2518750]

約数ペア:

[(1, 2518750), (2, 1259375), (5, 503750), (10, 251875), (13, 193750), (25, 100750), (26, 96875), (31, 81250), (50, 50375), (62, 40625), (65, 38750), (125, 20150), (130, 19375), (155, 16250), (250, 10075), (310, 8125), (325, 7750), (403, 6250), (625, 4030), (650, 3875), (775, 3250), (806, 3125), (1250, 2015), (1550, 1625)]