17965840

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{3163}}^1$

素因数の和:3247

約数の個数: 40

約数和(自身を含む): 42372288

約数和(自身を除く): 24406448

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 3163, 5680, 6326, 12652, 15815, 25304, 31630, 50608, 63260, 126520, 224573, 253040, 449146, 898292, 1122865, 1796584, 2245730, 3593168, 4491460, 8982920, 17965840]

約数ペア:

[(1, 17965840), (2, 8982920), (4, 4491460), (5, 3593168), (8, 2245730), (10, 1796584), (16, 1122865), (20, 898292), (40, 449146), (71, 253040), (80, 224573), (142, 126520), (284, 63260), (355, 50608), (568, 31630), (710, 25304), (1136, 15815), (1420, 12652), (2840, 6326), (3163, 5680)]