2015000

素因数分解:

$2^3\times 5^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1$

素因数の和:70

約数の個数: 80

約数和(自身を含む): 5248320

約数和(自身を除く): 3233320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 31, 40, 50, 52, 62, 65, 100, 104, 124, 125, 130, 155, 200, 248, 250, 260, 310, 325, 403, 500, 520, 620, 625, 650, 775, 806, 1000, 1240, 1250, 1300, 1550, 1612, 1625, 2015, 2500, 2600, 3100, 3224, 3250, 3875, 4030, 5000, 6200, 6500, 7750, 8060, 8125, 10075, 13000, 15500, 16120, 16250, 19375, 20150, 31000, 32500, 38750, 40300, 50375, 65000, 77500, 80600, 100750, 155000, 201500, 251875, 403000, 503750, 1007500, 2015000]

約数ペア:

[(1, 2015000), (2, 1007500), (4, 503750), (5, 403000), (8, 251875), (10, 201500), (13, 155000), (20, 100750), (25, 80600), (26, 77500), (31, 65000), (40, 50375), (50, 40300), (52, 38750), (62, 32500), (65, 31000), (100, 20150), (104, 19375), (124, 16250), (125, 16120), (130, 15500), (155, 13000), (200, 10075), (248, 8125), (250, 8060), (260, 7750), (310, 6500), (325, 6200), (403, 5000), (500, 4030), (520, 3875), (620, 3250), (625, 3224), (650, 3100), (775, 2600), (806, 2500), (1000, 2015), (1240, 1625), (1250, 1612), (1300, 1550)]