31543880

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{383}}^1$

素因数の和:494

約数の個数: 64

約数和(自身を含む): 74649600

約数和(自身を除く): 43105720

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 71, 116, 142, 145, 232, 284, 290, 355, 383, 568, 580, 710, 766, 1160, 1420, 1532, 1915, 2059, 2840, 3064, 3830, 4118, 7660, 8236, 10295, 11107, 15320, 16472, 20590, 22214, 27193, 41180, 44428, 54386, 55535, 82360, 88856, 108772, 111070, 135965, 217544, 222140, 271930, 444280, 543860, 788597, 1087720, 1577194, 3154388, 3942985, 6308776, 7885970, 15771940, 31543880]

約数ペア:

[(1, 31543880), (2, 15771940), (4, 7885970), (5, 6308776), (8, 3942985), (10, 3154388), (20, 1577194), (29, 1087720), (40, 788597), (58, 543860), (71, 444280), (116, 271930), (142, 222140), (145, 217544), (232, 135965), (284, 111070), (290, 108772), (355, 88856), (383, 82360), (568, 55535), (580, 54386), (710, 44428), (766, 41180), (1160, 27193), (1420, 22214), (1532, 20590), (1915, 16472), (2059, 15320), (2840, 11107), (3064, 10295), (3830, 8236), (4118, 7660)]