40768520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{78401}}^1$

素因数の和:78425

約数の個数: 32

約数和(自身を含む): 98786520

約数和(自身を除く): 58018000

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 78401, 156802, 313604, 392005, 627208, 784010, 1019213, 1568020, 2038426, 3136040, 4076852, 5096065, 8153704, 10192130, 20384260, 40768520]

約数ペア:

[(1, 40768520), (2, 20384260), (4, 10192130), (5, 8153704), (8, 5096065), (10, 4076852), (13, 3136040), (20, 2038426), (26, 1568020), (40, 1019213), (52, 784010), (65, 627208), (104, 392005), (130, 313604), (260, 156802), (520, 78401)]