21480810

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{55079}}^1$

素因数の和:55102

約数の個数: 32

約数和(自身を含む): 55520640

約数和(自身を除く): 34039830

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 55079, 110158, 165237, 275395, 330474, 550790, 716027, 826185, 1432054, 1652370, 2148081, 3580135, 4296162, 7160270, 10740405, 21480810]

約数ペア:

[(1, 21480810), (2, 10740405), (3, 7160270), (5, 4296162), (6, 3580135), (10, 2148081), (13, 1652370), (15, 1432054), (26, 826185), (30, 716027), (39, 550790), (65, 330474), (78, 275395), (130, 165237), (195, 110158), (390, 55079)]