21958210

素因数分解:

$2^1\times 5^1\times {\mathrm{1297}}^1\times {\mathrm{1693}}^1$

素因数の和:2997

約数の個数: 16

約数和(自身を含む): 39578616

約数和(自身を除く): 17620406

約数列:

[1, 2, 5, 10, 1297, 1693, 2594, 3386, 6485, 8465, 12970, 16930, 2195821, 4391642, 10979105, 21958210]

約数ペア:

[(1, 21958210), (2, 10979105), (5, 4391642), (10, 2195821), (1297, 16930), (1693, 12970), (2594, 8465), (3386, 6485)]