81065840

素因数分解:

$2^4\times 5^1\times {\mathrm{269}}^1\times {\mathrm{3767}}^1$

素因数の和:4049

約数の個数: 40

約数和(自身を含む): 189228960

約数和(自身を除く): 108163120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 269, 538, 1076, 1345, 2152, 2690, 3767, 4304, 5380, 7534, 10760, 15068, 18835, 21520, 30136, 37670, 60272, 75340, 150680, 301360, 1013323, 2026646, 4053292, 5066615, 8106584, 10133230, 16213168, 20266460, 40532920, 81065840]

約数ペア:

[(1, 81065840), (2, 40532920), (4, 20266460), (5, 16213168), (8, 10133230), (10, 8106584), (16, 5066615), (20, 4053292), (40, 2026646), (80, 1013323), (269, 301360), (538, 150680), (1076, 75340), (1345, 60272), (2152, 37670), (2690, 30136), (3767, 21520), (4304, 18835), (5380, 15068), (7534, 10760)]