21028030

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{23627}}^1$

素因数の和:23723

約数の個数: 16

約数和(自身を含む): 38277360

約数和(自身を除く): 17249330

約数列:

[1, 2, 5, 10, 89, 178, 445, 890, 23627, 47254, 118135, 236270, 2102803, 4205606, 10514015, 21028030]

約数ペア:

[(1, 21028030), (2, 10514015), (5, 4205606), (10, 2102803), (89, 236270), (178, 118135), (445, 47254), (890, 23627)]