21090480

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{87877}}^1$

素因数の和:87893

約数の個数: 40

約数和(自身を含む): 65381232

約数和(自身を除く): 44290752

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 87877, 175754, 263631, 351508, 439385, 527262, 703016, 878770, 1054524, 1318155, 1406032, 1757540, 2109048, 2636310, 3515080, 4218096, 5272620, 7030160, 10545240, 21090480]

約数ペア:

[(1, 21090480), (2, 10545240), (3, 7030160), (4, 5272620), (5, 4218096), (6, 3515080), (8, 2636310), (10, 2109048), (12, 1757540), (15, 1406032), (16, 1318155), (20, 1054524), (24, 878770), (30, 703016), (40, 527262), (48, 439385), (60, 351508), (80, 263631), (120, 175754), (240, 87877)]