289920440

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{154213}}^1$

素因数の和:154271

約数の個数: 32

約数和(自身を含む): 666204480

約数和(自身を除く): 376284040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 940, 1880, 154213, 308426, 616852, 771065, 1233704, 1542130, 3084260, 6168520, 7248011, 14496022, 28992044, 36240055, 57984088, 72480110, 144960220, 289920440]

約数ペア:

[(1, 289920440), (2, 144960220), (4, 72480110), (5, 57984088), (8, 36240055), (10, 28992044), (20, 14496022), (40, 7248011), (47, 6168520), (94, 3084260), (188, 1542130), (235, 1233704), (376, 771065), (470, 616852), (940, 308426), (1880, 154213)]