2690480

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^2\times {\mathrm{199}}^1$

素因数の和:238

約数の個数: 60

約数和(自身を含む): 6807600

約数和(自身を除く): 4117120

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 169, 199, 208, 260, 338, 398, 520, 676, 796, 845, 995, 1040, 1352, 1592, 1690, 1990, 2587, 2704, 3184, 3380, 3980, 5174, 6760, 7960, 10348, 12935, 13520, 15920, 20696, 25870, 33631, 41392, 51740, 67262, 103480, 134524, 168155, 206960, 269048, 336310, 538096, 672620, 1345240, 2690480]

約数ペア:

[(1, 2690480), (2, 1345240), (4, 672620), (5, 538096), (8, 336310), (10, 269048), (13, 206960), (16, 168155), (20, 134524), (26, 103480), (40, 67262), (52, 51740), (65, 41392), (80, 33631), (104, 25870), (130, 20696), (169, 15920), (199, 13520), (208, 12935), (260, 10348), (338, 7960), (398, 6760), (520, 5174), (676, 3980), (796, 3380), (845, 3184), (995, 2704), (1040, 2587), (1352, 1990), (1592, 1690)]