21421970

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{93139}}^1$

素因数の和:93169

約数の個数: 16

約数和(自身を含む): 40236480

約数和(自身を除く): 18814510

約数列:

[1, 2, 5, 10, 23, 46, 115, 230, 93139, 186278, 465695, 931390, 2142197, 4284394, 10710985, 21421970]

約数ペア:

[(1, 21421970), (2, 10710985), (5, 4284394), (10, 2142197), (23, 931390), (46, 465695), (115, 186278), (230, 93139)]