21090190

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{10091}}^1$

素因数の和:10128

約数の個数: 32

約数和(自身を含む): 43597440

約数和(自身を除く): 22507250

約数列:

[1, 2, 5, 10, 11, 19, 22, 38, 55, 95, 110, 190, 209, 418, 1045, 2090, 10091, 20182, 50455, 100910, 111001, 191729, 222002, 383458, 555005, 958645, 1110010, 1917290, 2109019, 4218038, 10545095, 21090190]

約数ペア:

[(1, 21090190), (2, 10545095), (5, 4218038), (10, 2109019), (11, 1917290), (19, 1110010), (22, 958645), (38, 555005), (55, 383458), (95, 222002), (110, 191729), (190, 111001), (209, 100910), (418, 50455), (1045, 20182), (2090, 10091)]