21114520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{1033}}^1$

素因数の和:1124

約数の個数: 64

約数和(自身を含む): 55091520

約数和(自身を除く): 33977000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 73, 140, 146, 280, 292, 365, 511, 584, 730, 1022, 1033, 1460, 2044, 2066, 2555, 2920, 4088, 4132, 5110, 5165, 7231, 8264, 10220, 10330, 14462, 20440, 20660, 28924, 36155, 41320, 57848, 72310, 75409, 144620, 150818, 289240, 301636, 377045, 527863, 603272, 754090, 1055726, 1508180, 2111452, 2639315, 3016360, 4222904, 5278630, 10557260, 21114520]

約数ペア:

[(1, 21114520), (2, 10557260), (4, 5278630), (5, 4222904), (7, 3016360), (8, 2639315), (10, 2111452), (14, 1508180), (20, 1055726), (28, 754090), (35, 603272), (40, 527863), (56, 377045), (70, 301636), (73, 289240), (140, 150818), (146, 144620), (280, 75409), (292, 72310), (365, 57848), (511, 41320), (584, 36155), (730, 28924), (1022, 20660), (1033, 20440), (1460, 14462), (2044, 10330), (2066, 10220), (2555, 8264), (2920, 7231), (4088, 5165), (4132, 5110)]