20068750

素因数分解:

$2^1\times 5^5\times {\mathrm{13}}^2\times {\mathrm{19}}^1$

素因数の和:72

約数の個数: 72

約数和(自身を含む): 42887880

約数和(自身を除く): 22819130

約数列:

[1, 2, 5, 10, 13, 19, 25, 26, 38, 50, 65, 95, 125, 130, 169, 190, 247, 250, 325, 338, 475, 494, 625, 650, 845, 950, 1235, 1250, 1625, 1690, 2375, 2470, 3125, 3211, 3250, 4225, 4750, 6175, 6250, 6422, 8125, 8450, 11875, 12350, 16055, 16250, 21125, 23750, 30875, 32110, 40625, 42250, 59375, 61750, 80275, 81250, 105625, 118750, 154375, 160550, 211250, 308750, 401375, 528125, 771875, 802750, 1056250, 1543750, 2006875, 4013750, 10034375, 20068750]

約数ペア:

[(1, 20068750), (2, 10034375), (5, 4013750), (10, 2006875), (13, 1543750), (19, 1056250), (25, 802750), (26, 771875), (38, 528125), (50, 401375), (65, 308750), (95, 211250), (125, 160550), (130, 154375), (169, 118750), (190, 105625), (247, 81250), (250, 80275), (325, 61750), (338, 59375), (475, 42250), (494, 40625), (625, 32110), (650, 30875), (845, 23750), (950, 21125), (1235, 16250), (1250, 16055), (1625, 12350), (1690, 11875), (2375, 8450), (2470, 8125), (3125, 6422), (3211, 6250), (3250, 6175), (4225, 4750)]