21479250

素因数分解:

$2^1\times 3^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{2203}}^1$

素因数の和:2236

約数の個数: 64

約数和(自身を含む): 57762432

約数和(自身を除く): 36283182

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 25, 26, 30, 39, 50, 65, 75, 78, 125, 130, 150, 195, 250, 325, 375, 390, 650, 750, 975, 1625, 1950, 2203, 3250, 4406, 4875, 6609, 9750, 11015, 13218, 22030, 28639, 33045, 55075, 57278, 66090, 85917, 110150, 143195, 165225, 171834, 275375, 286390, 330450, 429585, 550750, 715975, 826125, 859170, 1431950, 1652250, 2147925, 3579875, 4295850, 7159750, 10739625, 21479250]

約数ペア:

[(1, 21479250), (2, 10739625), (3, 7159750), (5, 4295850), (6, 3579875), (10, 2147925), (13, 1652250), (15, 1431950), (25, 859170), (26, 826125), (30, 715975), (39, 550750), (50, 429585), (65, 330450), (75, 286390), (78, 275375), (125, 171834), (130, 165225), (150, 143195), (195, 110150), (250, 85917), (325, 66090), (375, 57278), (390, 55075), (650, 33045), (750, 28639), (975, 22030), (1625, 13218), (1950, 11015), (2203, 9750), (3250, 6609), (4406, 4875)]