31381065

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{127}}^1$

素因数の和:191

約数の個数: 72

約数和(自身を含む): 61301760

約数和(自身を除く): 29920695

約数列:

[1, 3, 5, 9, 15, 17, 19, 45, 51, 57, 85, 95, 127, 153, 171, 255, 285, 289, 323, 381, 635, 765, 855, 867, 969, 1143, 1445, 1615, 1905, 2159, 2413, 2601, 2907, 4335, 4845, 5491, 5715, 6477, 7239, 10795, 12065, 13005, 14535, 16473, 19431, 21717, 27455, 32385, 36195, 36703, 41021, 49419, 82365, 97155, 108585, 110109, 123063, 183515, 205105, 247095, 330327, 369189, 550545, 615315, 697357, 1651635, 1845945, 2092071, 3486785, 6276213, 10460355, 31381065]

約数ペア:

[(1, 31381065), (3, 10460355), (5, 6276213), (9, 3486785), (15, 2092071), (17, 1845945), (19, 1651635), (45, 697357), (51, 615315), (57, 550545), (85, 369189), (95, 330327), (127, 247095), (153, 205105), (171, 183515), (255, 123063), (285, 110109), (289, 108585), (323, 97155), (381, 82365), (635, 49419), (765, 41021), (855, 36703), (867, 36195), (969, 32385), (1143, 27455), (1445, 21717), (1615, 19431), (1905, 16473), (2159, 14535), (2413, 13005), (2601, 12065), (2907, 10795), (4335, 7239), (4845, 6477), (5491, 5715)]