28881315

素因数分解:

$3^2\times 5^1\times {\mathrm{251}}^1\times {\mathrm{2557}}^1$

素因数の和:2819

約数の個数: 24

約数和(自身を含む): 50280048

約数和(自身を除く): 21398733

約数列:

[1, 3, 5, 9, 15, 45, 251, 753, 1255, 2259, 2557, 3765, 7671, 11295, 12785, 23013, 38355, 115065, 641807, 1925421, 3209035, 5776263, 9627105, 28881315]

約数ペア:

[(1, 28881315), (3, 9627105), (5, 5776263), (9, 3209035), (15, 1925421), (45, 641807), (251, 115065), (753, 38355), (1255, 23013), (2259, 12785), (2557, 11295), (3765, 7671)]