2219240

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{509}}^1$

素因数の和:629

約数の個数: 32

約数和(自身を含む): 5049000

約数和(自身を除く): 2829760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 509, 545, 872, 1018, 1090, 2036, 2180, 2545, 4072, 4360, 5090, 10180, 20360, 55481, 110962, 221924, 277405, 443848, 554810, 1109620, 2219240]

約数ペア:

[(1, 2219240), (2, 1109620), (4, 554810), (5, 443848), (8, 277405), (10, 221924), (20, 110962), (40, 55481), (109, 20360), (218, 10180), (436, 5090), (509, 4360), (545, 4072), (872, 2545), (1018, 2180), (1090, 2036)]