18873441

素因数分解:

$3^2\times {\mathrm{19}}^2\times {\mathrm{37}}^1\times {\mathrm{157}}^1$

素因数の和:238

約数の個数: 36

約数和(自身を含む): 29737812

約数和(自身を除く): 10864371

約数列:

[1, 3, 9, 19, 37, 57, 111, 157, 171, 333, 361, 471, 703, 1083, 1413, 2109, 2983, 3249, 5809, 6327, 8949, 13357, 17427, 26847, 40071, 52281, 56677, 110371, 120213, 170031, 331113, 510093, 993339, 2097049, 6291147, 18873441]

約数ペア:

[(1, 18873441), (3, 6291147), (9, 2097049), (19, 993339), (37, 510093), (57, 331113), (111, 170031), (157, 120213), (171, 110371), (333, 56677), (361, 52281), (471, 40071), (703, 26847), (1083, 17427), (1413, 13357), (2109, 8949), (2983, 6327), (3249, 5809)]