313627775

素因数分解:

$5^2\times {\mathrm{19}}^3\times {\mathrm{31}}^1\times {\mathrm{59}}^1$

素因数の和:157

約数の個数: 48

約数和(自身を含む): 430924800

約数和(自身を除く): 117297025

約数列:

[1, 5, 19, 25, 31, 59, 95, 155, 295, 361, 475, 589, 775, 1121, 1475, 1805, 1829, 2945, 5605, 6859, 9025, 9145, 11191, 14725, 21299, 28025, 34295, 34751, 45725, 55955, 106495, 171475, 173755, 212629, 279775, 404681, 532475, 660269, 868775, 1063145, 2023405, 3301345, 5315725, 10117025, 12545111, 16506725, 62725555, 313627775]

約数ペア:

[(1, 313627775), (5, 62725555), (19, 16506725), (25, 12545111), (31, 10117025), (59, 5315725), (95, 3301345), (155, 2023405), (295, 1063145), (361, 868775), (475, 660269), (589, 532475), (775, 404681), (1121, 279775), (1475, 212629), (1805, 173755), (1829, 171475), (2945, 106495), (5605, 55955), (6859, 45725), (9025, 34751), (9145, 34295), (11191, 28025), (14725, 21299)]