251409995

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{139}}^1\times {\mathrm{241}}^1$

素因数の和:483

約数の個数: 32

約数和(自身を含む): 325248000

約数和(自身を除く): 73838005

約数列:

[1, 5, 19, 79, 95, 139, 241, 395, 695, 1205, 1501, 2641, 4579, 7505, 10981, 13205, 19039, 22895, 33499, 54905, 95195, 167495, 208639, 361741, 636481, 1043195, 1808705, 2646421, 3182405, 13232105, 50281999, 251409995]

約数ペア:

[(1, 251409995), (5, 50281999), (19, 13232105), (79, 3182405), (95, 2646421), (139, 1808705), (241, 1043195), (395, 636481), (695, 361741), (1205, 208639), (1501, 167495), (2641, 95195), (4579, 54905), (7505, 33499), (10981, 22895), (13205, 19039)]