21862765

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{211}}^1$

素因数の和:309

約数の個数: 32

約数和(自身を含む): 29673216

約数和(自身を除く): 7810451

約数列:

[1, 5, 17, 23, 53, 85, 115, 211, 265, 391, 901, 1055, 1219, 1955, 3587, 4505, 4853, 6095, 11183, 17935, 20723, 24265, 55915, 82501, 103615, 190111, 257209, 412505, 950555, 1286045, 4372553, 21862765]

約数ペア:

[(1, 21862765), (5, 4372553), (17, 1286045), (23, 950555), (53, 412505), (85, 257209), (115, 190111), (211, 103615), (265, 82501), (391, 55915), (901, 24265), (1055, 20723), (1219, 17935), (1955, 11183), (3587, 6095), (4505, 4853)]