19811337

素因数分解:

$3^1\times 7^3\times {\mathrm{13}}^1\times {\mathrm{1481}}^1$

素因数の和:1518

約数の個数: 32

約数和(自身を含む): 33196800

約数和(自身を除く): 13385463

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 343, 637, 1029, 1481, 1911, 4443, 4459, 10367, 13377, 19253, 31101, 57759, 72569, 134771, 217707, 404313, 507983, 943397, 1523949, 2830191, 6603779, 19811337]

約数ペア:

[(1, 19811337), (3, 6603779), (7, 2830191), (13, 1523949), (21, 943397), (39, 507983), (49, 404313), (91, 217707), (147, 134771), (273, 72569), (343, 57759), (637, 31101), (1029, 19253), (1481, 13377), (1911, 10367), (4443, 4459)]