16686680

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{13457}}^1$

素因数の和:13499

約数の個数: 32

約数和(自身を含む): 38759040

約数和(自身を除く): 22072360

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 13457, 26914, 53828, 67285, 107656, 134570, 269140, 417167, 538280, 834334, 1668668, 2085835, 3337336, 4171670, 8343340, 16686680]

約数ペア:

[(1, 16686680), (2, 8343340), (4, 4171670), (5, 3337336), (8, 2085835), (10, 1668668), (20, 834334), (31, 538280), (40, 417167), (62, 269140), (124, 134570), (155, 107656), (248, 67285), (310, 53828), (620, 26914), (1240, 13457)]