80864120

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{65213}}^1$

素因数の和:65255

約数の個数: 32

約数和(自身を含む): 187816320

約数和(自身を除く): 106952200

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 65213, 130426, 260852, 326065, 521704, 652130, 1304260, 2021603, 2608520, 4043206, 8086412, 10108015, 16172824, 20216030, 40432060, 80864120]

約数ペア:

[(1, 80864120), (2, 40432060), (4, 20216030), (5, 16172824), (8, 10108015), (10, 8086412), (20, 4043206), (31, 2608520), (40, 2021603), (62, 1304260), (124, 652130), (155, 521704), (248, 326065), (310, 260852), (620, 130426), (1240, 65213)]