21214375

素因数分解:

$5^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{373}}^1$

素因数の和:413

約数の個数: 40

約数和(自身を含む): 32714528

約数和(自身を除く): 11500153

約数列:

[1, 5, 7, 13, 25, 35, 65, 91, 125, 175, 325, 373, 455, 625, 875, 1625, 1865, 2275, 2611, 4375, 4849, 8125, 9325, 11375, 13055, 24245, 33943, 46625, 56875, 65275, 121225, 169715, 233125, 326375, 606125, 848575, 1631875, 3030625, 4242875, 21214375]

約数ペア:

[(1, 21214375), (5, 4242875), (7, 3030625), (13, 1631875), (25, 848575), (35, 606125), (65, 326375), (91, 233125), (125, 169715), (175, 121225), (325, 65275), (373, 56875), (455, 46625), (625, 33943), (875, 24245), (1625, 13055), (1865, 11375), (2275, 9325), (2611, 8125), (4375, 4849)]