280448080

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{318691}}^1$

素因数の和:318715

約数の個数: 40

約数和(自身を含む): 711320544

約数和(自身を除く): 430872464

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 318691, 637382, 1274764, 1593455, 2549528, 3186910, 3505601, 5099056, 6373820, 7011202, 12747640, 14022404, 17528005, 25495280, 28044808, 35056010, 56089616, 70112020, 140224040, 280448080]

約数ペア:

[(1, 280448080), (2, 140224040), (4, 70112020), (5, 56089616), (8, 35056010), (10, 28044808), (11, 25495280), (16, 17528005), (20, 14022404), (22, 12747640), (40, 7011202), (44, 6373820), (55, 5099056), (80, 3505601), (88, 3186910), (110, 2549528), (176, 1593455), (220, 1274764), (440, 637382), (880, 318691)]