21268675

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{787}}^1$

素因数の和:867

約数の個数: 24

約数和(自身を含む): 28141056

約数和(自身を除く): 6872381

約数列:

[1, 5, 23, 25, 47, 115, 235, 575, 787, 1081, 1175, 3935, 5405, 18101, 19675, 27025, 36989, 90505, 184945, 452525, 850747, 924725, 4253735, 21268675]

約数ペア:

[(1, 21268675), (5, 4253735), (23, 924725), (25, 850747), (47, 452525), (115, 184945), (235, 90505), (575, 36989), (787, 27025), (1081, 19675), (1175, 18101), (3935, 5405)]