21119120

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{233}}^1$

素因数の和:360

約数の個数: 80

約数和(自身を含む): 54317952

約数和(自身を除く): 33198832

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 103, 110, 176, 206, 220, 233, 412, 440, 466, 515, 824, 880, 932, 1030, 1133, 1165, 1648, 1864, 2060, 2266, 2330, 2563, 3728, 4120, 4532, 4660, 5126, 5665, 8240, 9064, 9320, 10252, 11330, 12815, 18128, 18640, 20504, 22660, 23999, 25630, 41008, 45320, 47998, 51260, 90640, 95996, 102520, 119995, 191992, 205040, 239990, 263989, 383984, 479980, 527978, 959960, 1055956, 1319945, 1919920, 2111912, 2639890, 4223824, 5279780, 10559560, 21119120]

約数ペア:

[(1, 21119120), (2, 10559560), (4, 5279780), (5, 4223824), (8, 2639890), (10, 2111912), (11, 1919920), (16, 1319945), (20, 1055956), (22, 959960), (40, 527978), (44, 479980), (55, 383984), (80, 263989), (88, 239990), (103, 205040), (110, 191992), (176, 119995), (206, 102520), (220, 95996), (233, 90640), (412, 51260), (440, 47998), (466, 45320), (515, 41008), (824, 25630), (880, 23999), (932, 22660), (1030, 20504), (1133, 18640), (1165, 18128), (1648, 12815), (1864, 11330), (2060, 10252), (2266, 9320), (2330, 9064), (2563, 8240), (3728, 5665), (4120, 5126), (4532, 4660)]