15663253520

素因数分解:

$2^4\times 5^1\times {\mathrm{491}}^1\times {\mathrm{398759}}^1$

素因数の和:399263

約数の個数: 40

約数和(自身を含む): 36491325120

約数和(自身を除く): 20828071600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 491, 982, 1964, 2455, 3928, 4910, 7856, 9820, 19640, 39280, 398759, 797518, 1595036, 1993795, 3190072, 3987590, 6380144, 7975180, 15950360, 31900720, 195790669, 391581338, 783162676, 978953345, 1566325352, 1957906690, 3132650704, 3915813380, 7831626760, 15663253520]

約数ペア:

[(1, 15663253520), (2, 7831626760), (4, 3915813380), (5, 3132650704), (8, 1957906690), (10, 1566325352), (16, 978953345), (20, 783162676), (40, 391581338), (80, 195790669), (491, 31900720), (982, 15950360), (1964, 7975180), (2455, 6380144), (3928, 3987590), (4910, 3190072), (7856, 1993795), (9820, 1595036), (19640, 797518), (39280, 398759)]