18978996

素因数分解:

$2^2\times 3^1\times {\mathrm{43}}^1\times {\mathrm{36781}}^1$

素因数の和:36831

約数の個数: 24

約数和(自身を含む): 45315424

約数和(自身を除く): 26336428

約数列:

[1, 2, 3, 4, 6, 12, 43, 86, 129, 172, 258, 516, 36781, 73562, 110343, 147124, 220686, 441372, 1581583, 3163166, 4744749, 6326332, 9489498, 18978996]

約数ペア:

[(1, 18978996), (2, 9489498), (3, 6326332), (4, 4744749), (6, 3163166), (12, 1581583), (43, 441372), (86, 220686), (129, 147124), (172, 110343), (258, 73562), (516, 36781)]