199490220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{499}}^1\times {\mathrm{2221}}^1$

素因数の和:2735

約数の個数: 72

約数和(自身を含む): 606606000

約数和(自身を除く): 407115780

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 499, 998, 1497, 1996, 2221, 2495, 2994, 4442, 4491, 4990, 5988, 6663, 7485, 8884, 8982, 9980, 11105, 13326, 14970, 17964, 19989, 22210, 22455, 26652, 29940, 33315, 39978, 44420, 44910, 66630, 79956, 89820, 99945, 133260, 199890, 399780, 1108279, 2216558, 3324837, 4433116, 5541395, 6649674, 9974511, 11082790, 13299348, 16624185, 19949022, 22165580, 33248370, 39898044, 49872555, 66496740, 99745110, 199490220]

約数ペア:

[(1, 199490220), (2, 99745110), (3, 66496740), (4, 49872555), (5, 39898044), (6, 33248370), (9, 22165580), (10, 19949022), (12, 16624185), (15, 13299348), (18, 11082790), (20, 9974511), (30, 6649674), (36, 5541395), (45, 4433116), (60, 3324837), (90, 2216558), (180, 1108279), (499, 399780), (998, 199890), (1497, 133260), (1996, 99945), (2221, 89820), (2495, 79956), (2994, 66630), (4442, 44910), (4491, 44420), (4990, 39978), (5988, 33315), (6663, 29940), (7485, 26652), (8884, 22455), (8982, 22210), (9980, 19989), (11105, 17964), (13326, 14970)]