21185514

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{277}}^1\times {\mathrm{607}}^1$

素因数の和:899

約数の個数: 48

約数和(自身を含む): 52735488

約数和(自身を除く): 31549974

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 277, 554, 607, 831, 1214, 1662, 1821, 1939, 2493, 3642, 3878, 4249, 4986, 5463, 5817, 8498, 10926, 11634, 12747, 17451, 25494, 34902, 38241, 76482, 168139, 336278, 504417, 1008834, 1176973, 1513251, 2353946, 3026502, 3530919, 7061838, 10592757, 21185514]

約数ペア:

[(1, 21185514), (2, 10592757), (3, 7061838), (6, 3530919), (7, 3026502), (9, 2353946), (14, 1513251), (18, 1176973), (21, 1008834), (42, 504417), (63, 336278), (126, 168139), (277, 76482), (554, 38241), (607, 34902), (831, 25494), (1214, 17451), (1662, 12747), (1821, 11634), (1939, 10926), (2493, 8498), (3642, 5817), (3878, 5463), (4249, 4986)]