123889975

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{181}}^1$

素因数の和:352

約数の個数: 48

約数和(自身を含む): 178738560

約数和(自身を除く): 54848585

約数列:

[1, 5, 11, 19, 25, 55, 95, 131, 181, 209, 275, 475, 655, 905, 1045, 1441, 1991, 2489, 3275, 3439, 4525, 5225, 7205, 9955, 12445, 17195, 23711, 27379, 36025, 37829, 49775, 62225, 85975, 118555, 136895, 189145, 260821, 450509, 592775, 684475, 945725, 1304105, 2252545, 4955599, 6520525, 11262725, 24777995, 123889975]

約数ペア:

[(1, 123889975), (5, 24777995), (11, 11262725), (19, 6520525), (25, 4955599), (55, 2252545), (95, 1304105), (131, 945725), (181, 684475), (209, 592775), (275, 450509), (475, 260821), (655, 189145), (905, 136895), (1045, 118555), (1441, 85975), (1991, 62225), (2489, 49775), (3275, 37829), (3439, 36025), (4525, 27379), (5225, 23711), (7205, 17195), (9955, 12445)]