1280491856

素因数分解:

$2^4\times 7^1\times {\mathrm{37}}^1\times {\mathrm{308999}}^1$

素因数の和:309051

約数の個数: 40

約数和(自身を含む): 2912016000

約数和(自身を除く): 1631524144

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 37, 56, 74, 112, 148, 259, 296, 518, 592, 1036, 2072, 4144, 308999, 617998, 1235996, 2162993, 2471992, 4325986, 4943984, 8651972, 11432963, 17303944, 22865926, 34607888, 45731852, 80030741, 91463704, 160061482, 182927408, 320122964, 640245928, 1280491856]

約数ペア:

[(1, 1280491856), (2, 640245928), (4, 320122964), (7, 182927408), (8, 160061482), (14, 91463704), (16, 80030741), (28, 45731852), (37, 34607888), (56, 22865926), (74, 17303944), (112, 11432963), (148, 8651972), (259, 4943984), (296, 4325986), (518, 2471992), (592, 2162993), (1036, 1235996), (2072, 617998), (4144, 308999)]