177628520

素因数分解:

$2^3\times 5^1\times {\mathrm{1223}}^1\times {\mathrm{3631}}^1$

素因数の和:4865

約数の個数: 32

約数和(自身を含む): 400101120

約数和(自身を除く): 222472600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1223, 2446, 3631, 4892, 6115, 7262, 9784, 12230, 14524, 18155, 24460, 29048, 36310, 48920, 72620, 145240, 4440713, 8881426, 17762852, 22203565, 35525704, 44407130, 88814260, 177628520]

約数ペア:

[(1, 177628520), (2, 88814260), (4, 44407130), (5, 35525704), (8, 22203565), (10, 17762852), (20, 8881426), (40, 4440713), (1223, 145240), (2446, 72620), (3631, 48920), (4892, 36310), (6115, 29048), (7262, 24460), (9784, 18155), (12230, 14524)]