21382928

素因数分解:

$2^4\times 7^1\times {\mathrm{71}}^1\times {\mathrm{2689}}^1$

素因数の和:2775

約数の個数: 40

約数和(自身を含む): 48032640

約数和(自身を除く): 26649712

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 71, 112, 142, 284, 497, 568, 994, 1136, 1988, 2689, 3976, 5378, 7952, 10756, 18823, 21512, 37646, 43024, 75292, 150584, 190919, 301168, 381838, 763676, 1336433, 1527352, 2672866, 3054704, 5345732, 10691464, 21382928]

約数ペア:

[(1, 21382928), (2, 10691464), (4, 5345732), (7, 3054704), (8, 2672866), (14, 1527352), (16, 1336433), (28, 763676), (56, 381838), (71, 301168), (112, 190919), (142, 150584), (284, 75292), (497, 43024), (568, 37646), (994, 21512), (1136, 18823), (1988, 10756), (2689, 7952), (3976, 5378)]