18655340

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{4463}}^1$

素因数の和:4502

約数の個数: 48

約数和(自身を含む): 44997120

約数和(自身を除く): 26341780

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 209, 220, 380, 418, 836, 1045, 2090, 4180, 4463, 8926, 17852, 22315, 44630, 49093, 84797, 89260, 98186, 169594, 196372, 245465, 339188, 423985, 490930, 847970, 932767, 981860, 1695940, 1865534, 3731068, 4663835, 9327670, 18655340]

約数ペア:

[(1, 18655340), (2, 9327670), (4, 4663835), (5, 3731068), (10, 1865534), (11, 1695940), (19, 981860), (20, 932767), (22, 847970), (38, 490930), (44, 423985), (55, 339188), (76, 245465), (95, 196372), (110, 169594), (190, 98186), (209, 89260), (220, 84797), (380, 49093), (418, 44630), (836, 22315), (1045, 17852), (2090, 8926), (4180, 4463)]