81406878

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{907}}^1\times {\mathrm{2137}}^1$

素因数の和:3056

約数の個数: 32

約数和(自身を含む): 186365184

約数和(自身を除く): 104958306

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 907, 1814, 2137, 2721, 4274, 5442, 6349, 6411, 12698, 12822, 14959, 19047, 29918, 38094, 44877, 89754, 1938259, 3876518, 5814777, 11629554, 13567813, 27135626, 40703439, 81406878]

約数ペア:

[(1, 81406878), (2, 40703439), (3, 27135626), (6, 13567813), (7, 11629554), (14, 5814777), (21, 3876518), (42, 1938259), (907, 89754), (1814, 44877), (2137, 38094), (2721, 29918), (4274, 19047), (5442, 14959), (6349, 12822), (6411, 12698)]