81499940

素因数分解:

$2^2\times 5^1\times {\mathrm{599}}^1\times {\mathrm{6803}}^1$

素因数の和:7411

約数の個数: 24

約数和(自身を含む): 171460800

約数和(自身を除く): 89960860

約数列:

[1, 2, 4, 5, 10, 20, 599, 1198, 2396, 2995, 5990, 6803, 11980, 13606, 27212, 34015, 68030, 136060, 4074997, 8149994, 16299988, 20374985, 40749970, 81499940]

約数ペア:

[(1, 81499940), (2, 40749970), (4, 20374985), (5, 16299988), (10, 8149994), (20, 4074997), (599, 136060), (1198, 68030), (2396, 34015), (2995, 27212), (5990, 13606), (6803, 11980)]