21437793

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{41}}^2\times {\mathrm{109}}^1$

素因数の和:210

約数の個数: 36

約数和(自身を含む): 34494460

約数和(自身を除く): 13056667

約数列:

[1, 3, 9, 13, 39, 41, 109, 117, 123, 327, 369, 533, 981, 1417, 1599, 1681, 4251, 4469, 4797, 5043, 12753, 13407, 15129, 21853, 40221, 58097, 65559, 174291, 183229, 196677, 522873, 549687, 1649061, 2381977, 7145931, 21437793]

約数ペア:

[(1, 21437793), (3, 7145931), (9, 2381977), (13, 1649061), (39, 549687), (41, 522873), (109, 196677), (117, 183229), (123, 174291), (327, 65559), (369, 58097), (533, 40221), (981, 21853), (1417, 15129), (1599, 13407), (1681, 12753), (4251, 5043), (4469, 4797)]