21999850

素因数分解:

$2^1\times 5^2\times {\mathrm{149}}^1\times {\mathrm{2953}}^1$

素因数の和:3114

約数の個数: 24

約数和(自身を含む): 41208300

約数和(自身を除く): 19208450

約数列:

[1, 2, 5, 10, 25, 50, 149, 298, 745, 1490, 2953, 3725, 5906, 7450, 14765, 29530, 73825, 147650, 439997, 879994, 2199985, 4399970, 10999925, 21999850]

約数ペア:

[(1, 21999850), (2, 10999925), (5, 4399970), (10, 2199985), (25, 879994), (50, 439997), (149, 147650), (298, 73825), (745, 29530), (1490, 14765), (2953, 7450), (3725, 5906)]