15918865

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1$

素因数の和:193

約数の個数: 32

約数和(自身を含む): 21248640

約数和(自身を除く): 5329775

約数列:

[1, 5, 19, 41, 61, 67, 95, 205, 305, 335, 779, 1159, 1273, 2501, 2747, 3895, 4087, 5795, 6365, 12505, 13735, 20435, 47519, 52193, 77653, 167567, 237595, 260965, 388265, 837835, 3183773, 15918865]

約数ペア:

[(1, 15918865), (5, 3183773), (19, 837835), (41, 388265), (61, 260965), (67, 237595), (95, 167567), (205, 77653), (305, 52193), (335, 47519), (779, 20435), (1159, 13735), (1273, 12505), (2501, 6365), (2747, 5795), (3895, 4087)]