285297280

素因数分解:

$2^7\times 5^1\times {\mathrm{223}}^1\times {\mathrm{1999}}^1$

素因数の和:2241

約数の個数: 64

約数和(自身を含む): 685440000

約数和(自身を除く): 400142720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 223, 320, 446, 640, 892, 1115, 1784, 1999, 2230, 3568, 3998, 4460, 7136, 7996, 8920, 9995, 14272, 15992, 17840, 19990, 28544, 31984, 35680, 39980, 63968, 71360, 79960, 127936, 142720, 159920, 255872, 319840, 445777, 639680, 891554, 1279360, 1783108, 2228885, 3566216, 4457770, 7132432, 8915540, 14264864, 17831080, 28529728, 35662160, 57059456, 71324320, 142648640, 285297280]

約数ペア:

[(1, 285297280), (2, 142648640), (4, 71324320), (5, 57059456), (8, 35662160), (10, 28529728), (16, 17831080), (20, 14264864), (32, 8915540), (40, 7132432), (64, 4457770), (80, 3566216), (128, 2228885), (160, 1783108), (223, 1279360), (320, 891554), (446, 639680), (640, 445777), (892, 319840), (1115, 255872), (1784, 159920), (1999, 142720), (2230, 127936), (3568, 79960), (3998, 71360), (4460, 63968), (7136, 39980), (7996, 35680), (8920, 31984), (9995, 28544), (14272, 19990), (15992, 17840)]