21227460

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{499}}^1\times {\mathrm{709}}^1$

素因数の和:1220

約数の個数: 48

約数和(自身を含む): 59640000

約数和(自身を除く): 38412540

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 499, 709, 998, 1418, 1497, 1996, 2127, 2495, 2836, 2994, 3545, 4254, 4990, 5988, 7090, 7485, 8508, 9980, 10635, 14180, 14970, 21270, 29940, 42540, 353791, 707582, 1061373, 1415164, 1768955, 2122746, 3537910, 4245492, 5306865, 7075820, 10613730, 21227460]

約数ペア:

[(1, 21227460), (2, 10613730), (3, 7075820), (4, 5306865), (5, 4245492), (6, 3537910), (10, 2122746), (12, 1768955), (15, 1415164), (20, 1061373), (30, 707582), (60, 353791), (499, 42540), (709, 29940), (998, 21270), (1418, 14970), (1497, 14180), (1996, 10635), (2127, 9980), (2495, 8508), (2836, 7485), (2994, 7090), (3545, 5988), (4254, 4990)]