31688720

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{797}}^1$

素因数の和:888

約数の個数: 80

約数和(自身を含む): 85494528

約数和(自身を除く): 53805808

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 71, 80, 112, 140, 142, 280, 284, 355, 497, 560, 568, 710, 797, 994, 1136, 1420, 1594, 1988, 2485, 2840, 3188, 3976, 3985, 4970, 5579, 5680, 6376, 7952, 7970, 9940, 11158, 12752, 15940, 19880, 22316, 27895, 31880, 39760, 44632, 55790, 56587, 63760, 89264, 111580, 113174, 223160, 226348, 282935, 396109, 446320, 452696, 565870, 792218, 905392, 1131740, 1584436, 1980545, 2263480, 3168872, 3961090, 4526960, 6337744, 7922180, 15844360, 31688720]

約数ペア:

[(1, 31688720), (2, 15844360), (4, 7922180), (5, 6337744), (7, 4526960), (8, 3961090), (10, 3168872), (14, 2263480), (16, 1980545), (20, 1584436), (28, 1131740), (35, 905392), (40, 792218), (56, 565870), (70, 452696), (71, 446320), (80, 396109), (112, 282935), (140, 226348), (142, 223160), (280, 113174), (284, 111580), (355, 89264), (497, 63760), (560, 56587), (568, 55790), (710, 44632), (797, 39760), (994, 31880), (1136, 27895), (1420, 22316), (1594, 19880), (1988, 15940), (2485, 12752), (2840, 11158), (3188, 9940), (3976, 7970), (3985, 7952), (4970, 6376), (5579, 5680)]