128520021

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^3\times {\mathrm{503}}^1$

素因数の和:582

約数の個数: 32

約数和(自身を含む): 205148160

約数和(自身を除く): 76628139

約数列:

[1, 3, 7, 21, 23, 69, 161, 483, 503, 529, 1509, 1587, 3521, 3703, 10563, 11109, 11569, 12167, 34707, 36501, 80983, 85169, 242949, 255507, 266087, 798261, 1862609, 5587827, 6120001, 18360003, 42840007, 128520021]

約数ペア:

[(1, 128520021), (3, 42840007), (7, 18360003), (21, 6120001), (23, 5587827), (69, 1862609), (161, 798261), (483, 266087), (503, 255507), (529, 242949), (1509, 85169), (1587, 80983), (3521, 36501), (3703, 34707), (10563, 12167), (11109, 11569)]