21026584

素因数分解:

$2^3\times {\mathrm{53}}^1\times {\mathrm{101}}^1\times {\mathrm{491}}^1$

素因数の和:651

約数の個数: 32

約数和(自身を含む): 40649040

約数和(自身を除く): 19622456

約数列:

[1, 2, 4, 8, 53, 101, 106, 202, 212, 404, 424, 491, 808, 982, 1964, 3928, 5353, 10706, 21412, 26023, 42824, 49591, 52046, 99182, 104092, 198364, 208184, 396728, 2628323, 5256646, 10513292, 21026584]

約数ペア:

[(1, 21026584), (2, 10513292), (4, 5256646), (8, 2628323), (53, 396728), (101, 208184), (106, 198364), (202, 104092), (212, 99182), (404, 52046), (424, 49591), (491, 42824), (808, 26023), (982, 21412), (1964, 10706), (3928, 5353)]