279752720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{268993}}^1$

素因数の和:269019

約数の個数: 40

約数和(自身を含む): 700460376

約数和(自身を除く): 420707656

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 268993, 537986, 1075972, 1344965, 2151944, 2689930, 3496909, 4303888, 5379860, 6993818, 10759720, 13987636, 17484545, 21519440, 27975272, 34969090, 55950544, 69938180, 139876360, 279752720]

約数ペア:

[(1, 279752720), (2, 139876360), (4, 69938180), (5, 55950544), (8, 34969090), (10, 27975272), (13, 21519440), (16, 17484545), (20, 13987636), (26, 10759720), (40, 6993818), (52, 5379860), (65, 4303888), (80, 3496909), (104, 2689930), (130, 2151944), (208, 1344965), (260, 1075972), (520, 537986), (1040, 268993)]