18711760

素因数分解:

$2^4\times 5^1\times {\mathrm{67}}^1\times {\mathrm{3491}}^1$

素因数の和:3571

約数の個数: 40

約数和(自身を含む): 44166816

約数和(自身を除く): 25455056

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 67, 80, 134, 268, 335, 536, 670, 1072, 1340, 2680, 3491, 5360, 6982, 13964, 17455, 27928, 34910, 55856, 69820, 139640, 233897, 279280, 467794, 935588, 1169485, 1871176, 2338970, 3742352, 4677940, 9355880, 18711760]

約数ペア:

[(1, 18711760), (2, 9355880), (4, 4677940), (5, 3742352), (8, 2338970), (10, 1871176), (16, 1169485), (20, 935588), (40, 467794), (67, 279280), (80, 233897), (134, 139640), (268, 69820), (335, 55856), (536, 34910), (670, 27928), (1072, 17455), (1340, 13964), (2680, 6982), (3491, 5360)]