81668560

素因数分解:

$2^4\times 5^1\times {\mathrm{271}}^1\times {\mathrm{3767}}^1$

素因数の和:4051

約数の個数: 40

約数和(自身を含む): 190630656

約数和(自身を除く): 108962096

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 271, 542, 1084, 1355, 2168, 2710, 3767, 4336, 5420, 7534, 10840, 15068, 18835, 21680, 30136, 37670, 60272, 75340, 150680, 301360, 1020857, 2041714, 4083428, 5104285, 8166856, 10208570, 16333712, 20417140, 40834280, 81668560]

約数ペア:

[(1, 81668560), (2, 40834280), (4, 20417140), (5, 16333712), (8, 10208570), (10, 8166856), (16, 5104285), (20, 4083428), (40, 2041714), (80, 1020857), (271, 301360), (542, 150680), (1084, 75340), (1355, 60272), (2168, 37670), (2710, 30136), (3767, 21680), (4336, 18835), (5420, 15068), (7534, 10840)]