19005580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{86389}}^1$

素因数の和:86409

約数の個数: 24

約数和(自身を含む): 43540560

約数和(自身を除く): 24534980

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 86389, 172778, 345556, 431945, 863890, 950279, 1727780, 1900558, 3801116, 4751395, 9502790, 19005580]

約数ペア:

[(1, 19005580), (2, 9502790), (4, 4751395), (5, 3801116), (10, 1900558), (11, 1727780), (20, 950279), (22, 863890), (44, 431945), (55, 345556), (110, 172778), (220, 86389)]