21493125

素因数分解:

$3^2\times 5^4\times {\mathrm{3821}}^1$

素因数の和:3847

約数の個数: 30

約数和(自身を含む): 38804766

約数和(自身を除く): 17311641

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 125, 225, 375, 625, 1125, 1875, 3821, 5625, 11463, 19105, 34389, 57315, 95525, 171945, 286575, 477625, 859725, 1432875, 2388125, 4298625, 7164375, 21493125]

約数ペア:

[(1, 21493125), (3, 7164375), (5, 4298625), (9, 2388125), (15, 1432875), (25, 859725), (45, 477625), (75, 286575), (125, 171945), (225, 95525), (375, 57315), (625, 34389), (1125, 19105), (1875, 11463), (3821, 5625)]