21554091

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{37}}^1\times {\mathrm{383}}^1$

素因数の和:452

約数の個数: 36

約数和(自身を含む): 34714368

約数和(自身を除く): 13160277

約数列:

[1, 3, 9, 13, 37, 39, 111, 117, 169, 333, 383, 481, 507, 1149, 1443, 1521, 3447, 4329, 4979, 6253, 14171, 14937, 18759, 42513, 44811, 56277, 64727, 127539, 184223, 194181, 552669, 582543, 1658007, 2394899, 7184697, 21554091]

約数ペア:

[(1, 21554091), (3, 7184697), (9, 2394899), (13, 1658007), (37, 582543), (39, 552669), (111, 194181), (117, 184223), (169, 127539), (333, 64727), (383, 56277), (481, 44811), (507, 42513), (1149, 18759), (1443, 14937), (1521, 14171), (3447, 6253), (4329, 4979)]