21072720

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{87803}}^1$

素因数の和:87819

約数の個数: 40

約数和(自身を含む): 65326176

約数和(自身を除く): 44253456

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 87803, 175606, 263409, 351212, 439015, 526818, 702424, 878030, 1053636, 1317045, 1404848, 1756060, 2107272, 2634090, 3512120, 4214544, 5268180, 7024240, 10536360, 21072720]

約数ペア:

[(1, 21072720), (2, 10536360), (3, 7024240), (4, 5268180), (5, 4214544), (6, 3512120), (8, 2634090), (10, 2107272), (12, 1756060), (15, 1404848), (16, 1317045), (20, 1053636), (24, 878030), (30, 702424), (40, 526818), (48, 439015), (60, 351212), (80, 263409), (120, 175606), (240, 87803)]