21875625

素因数分解:

$3^2\times 5^4\times {\mathrm{3889}}^1$

素因数の和:3915

約数の個数: 30

約数和(自身を含む): 39495170

約数和(自身を除く): 17619545

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 125, 225, 375, 625, 1125, 1875, 3889, 5625, 11667, 19445, 35001, 58335, 97225, 175005, 291675, 486125, 875025, 1458375, 2430625, 4375125, 7291875, 21875625]

約数ペア:

[(1, 21875625), (3, 7291875), (5, 4375125), (9, 2430625), (15, 1458375), (25, 875025), (45, 486125), (75, 291675), (125, 175005), (225, 97225), (375, 58335), (625, 35001), (1125, 19445), (1875, 11667), (3889, 5625)]