20020221

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{1249}}^1$

素因数の和:1405

約数の個数: 24

約数和(自身を含む): 31395000

約数和(自身を除く): 11374779

約数列:

[1, 3, 9, 13, 39, 117, 137, 411, 1233, 1249, 1781, 3747, 5343, 11241, 16029, 16237, 48711, 146133, 171113, 513339, 1540017, 2224469, 6673407, 20020221]

約数ペア:

[(1, 20020221), (3, 6673407), (9, 2224469), (13, 1540017), (39, 513339), (117, 171113), (137, 146133), (411, 48711), (1233, 16237), (1249, 16029), (1781, 11241), (3747, 5343)]