8645720

素因数分解:

$2^3\times 5^1\times {\mathrm{331}}^1\times {\mathrm{653}}^1$

素因数の和:995

約数の個数: 32

約数和(自身を含む): 19541520

約数和(自身を除く): 10895800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 331, 653, 662, 1306, 1324, 1655, 2612, 2648, 3265, 3310, 5224, 6530, 6620, 13060, 13240, 26120, 216143, 432286, 864572, 1080715, 1729144, 2161430, 4322860, 8645720]

約数ペア:

[(1, 8645720), (2, 4322860), (4, 2161430), (5, 1729144), (8, 1080715), (10, 864572), (20, 432286), (40, 216143), (331, 26120), (653, 13240), (662, 13060), (1306, 6620), (1324, 6530), (1655, 5224), (2612, 3310), (2648, 3265)]