21555225

素因数分解:

$3^2\times 5^2\times {\mathrm{95801}}^1$

素因数の和:95817

約数の個数: 18

約数和(自身を含む): 38608206

約数和(自身を除く): 17052981

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 95801, 287403, 479005, 862209, 1437015, 2395025, 4311045, 7185075, 21555225]

約数ペア:

[(1, 21555225), (3, 7185075), (5, 4311045), (9, 2395025), (15, 1437015), (25, 862209), (45, 479005), (75, 287403), (225, 95801)]