720708575

素因数分解:

$5^2\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{163}}^1$

素因数の和:344

約数の個数: 48

約数和(自身を含む): 948796416

約数和(自身を除く): 228087841

約数列:

[1, 5, 25, 47, 53, 71, 163, 235, 265, 355, 815, 1175, 1325, 1775, 2491, 3337, 3763, 4075, 7661, 8639, 11573, 12455, 16685, 18815, 38305, 43195, 57865, 62275, 83425, 94075, 176861, 191525, 215975, 289325, 406033, 543931, 613369, 884305, 2030165, 2719655, 3066845, 4421525, 10150825, 13598275, 15334225, 28828343, 144141715, 720708575]

約数ペア:

[(1, 720708575), (5, 144141715), (25, 28828343), (47, 15334225), (53, 13598275), (71, 10150825), (163, 4421525), (235, 3066845), (265, 2719655), (355, 2030165), (815, 884305), (1175, 613369), (1325, 543931), (1775, 406033), (2491, 289325), (3337, 215975), (3763, 191525), (4075, 176861), (7661, 94075), (8639, 83425), (11573, 62275), (12455, 57865), (16685, 43195), (18815, 38305)]