278804735

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{220399}}^1$

素因数の和:220438

約数の個数: 16

約数和(自身を含む): 380851200

約数和(自身を除く): 102046465

約数列:

[1, 5, 11, 23, 55, 115, 253, 1265, 220399, 1101995, 2424389, 5069177, 12121945, 25345885, 55760947, 278804735]

約数ペア:

[(1, 278804735), (5, 55760947), (11, 25345885), (23, 12121945), (55, 5069177), (115, 2424389), (253, 1101995), (1265, 220399)]