81664336

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{167}}^1\times {\mathrm{2351}}^1$

素因数の和:2539

約数の個数: 40

約数和(自身を含む): 171489024

約数和(自身を除く): 89824688

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 167, 208, 334, 668, 1336, 2171, 2351, 2672, 4342, 4702, 8684, 9404, 17368, 18808, 30563, 34736, 37616, 61126, 122252, 244504, 392617, 489008, 785234, 1570468, 3140936, 5104021, 6281872, 10208042, 20416084, 40832168, 81664336]

約数ペア:

[(1, 81664336), (2, 40832168), (4, 20416084), (8, 10208042), (13, 6281872), (16, 5104021), (26, 3140936), (52, 1570468), (104, 785234), (167, 489008), (208, 392617), (334, 244504), (668, 122252), (1336, 61126), (2171, 37616), (2351, 34736), (2672, 30563), (4342, 18808), (4702, 17368), (8684, 9404)]