18289761

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{1993}}^1$

素因数の和:2045

約数の個数: 32

約数和(自身を含む): 30627840

約数和(自身を除く): 12338079

約数列:

[1, 3, 7, 19, 21, 23, 57, 69, 133, 161, 399, 437, 483, 1311, 1993, 3059, 5979, 9177, 13951, 37867, 41853, 45839, 113601, 137517, 265069, 320873, 795207, 870941, 962619, 2612823, 6096587, 18289761]

約数ペア:

[(1, 18289761), (3, 6096587), (7, 2612823), (19, 962619), (21, 870941), (23, 795207), (57, 320873), (69, 265069), (133, 137517), (161, 113601), (399, 45839), (437, 41853), (483, 37867), (1311, 13951), (1993, 9177), (3059, 5979)]