17728765

素因数分解:

$5^1\times {\mathrm{53}}^1\times {\mathrm{149}}^1\times {\mathrm{449}}^1$

素因数の和:656

約数の個数: 16

約数和(自身を含む): 21870000

約数和(自身を除く): 4141235

約数列:

[1, 5, 53, 149, 265, 449, 745, 2245, 7897, 23797, 39485, 66901, 118985, 334505, 3545753, 17728765]

約数ペア:

[(1, 17728765), (5, 3545753), (53, 334505), (149, 118985), (265, 66901), (449, 39485), (745, 23797), (2245, 7897)]