388991804

素因数分解:

$2^2\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{101}}^1\times {\mathrm{491}}^1$

素因数の和:686

約数の個数: 48

約数和(自身を含む): 720842976

約数和(自身を除く): 331851172

約数列:

[1, 2, 4, 37, 53, 74, 101, 106, 148, 202, 212, 404, 491, 982, 1961, 1964, 3737, 3922, 5353, 7474, 7844, 10706, 14948, 18167, 21412, 26023, 36334, 49591, 52046, 72668, 99182, 104092, 198061, 198364, 396122, 792244, 962851, 1834867, 1925702, 2628323, 3669734, 3851404, 5256646, 7339468, 10513292, 97247951, 194495902, 388991804]

約数ペア:

[(1, 388991804), (2, 194495902), (4, 97247951), (37, 10513292), (53, 7339468), (74, 5256646), (101, 3851404), (106, 3669734), (148, 2628323), (202, 1925702), (212, 1834867), (404, 962851), (491, 792244), (982, 396122), (1961, 198364), (1964, 198061), (3737, 104092), (3922, 99182), (5353, 72668), (7474, 52046), (7844, 49591), (10706, 36334), (14948, 26023), (18167, 21412)]