2219720

素因数分解:

$2^3\times 5^1\times {\mathrm{211}}^1\times {\mathrm{263}}^1$

素因数の和:485

約数の個数: 32

約数和(自身を含む): 5037120

約数和(自身を除く): 2817400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 211, 263, 422, 526, 844, 1052, 1055, 1315, 1688, 2104, 2110, 2630, 4220, 5260, 8440, 10520, 55493, 110986, 221972, 277465, 443944, 554930, 1109860, 2219720]

約数ペア:

[(1, 2219720), (2, 1109860), (4, 554930), (5, 443944), (8, 277465), (10, 221972), (20, 110986), (40, 55493), (211, 10520), (263, 8440), (422, 5260), (526, 4220), (844, 2630), (1052, 2110), (1055, 2104), (1315, 1688)]