21268625

素因数分解:

$5^3\times 7^1\times {\mathrm{109}}^1\times {\mathrm{223}}^1$

素因数の和:354

約数の個数: 32

約数和(自身を含む): 30750720

約数和(自身を除く): 9482095

約数列:

[1, 5, 7, 25, 35, 109, 125, 175, 223, 545, 763, 875, 1115, 1561, 2725, 3815, 5575, 7805, 13625, 19075, 24307, 27875, 39025, 95375, 121535, 170149, 195125, 607675, 850745, 3038375, 4253725, 21268625]

約数ペア:

[(1, 21268625), (5, 4253725), (7, 3038375), (25, 850745), (35, 607675), (109, 195125), (125, 170149), (175, 121535), (223, 95375), (545, 39025), (763, 27875), (875, 24307), (1115, 19075), (1561, 13625), (2725, 7805), (3815, 5575)]