21202510

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{499}}^1\times {\mathrm{607}}^1$

素因数の和:1120

約数の個数: 32

約数和(自身を含む): 43776000

約数和(自身を除く): 22573490

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 499, 607, 998, 1214, 2495, 3035, 3493, 4249, 4990, 6070, 6986, 8498, 17465, 21245, 34930, 42490, 302893, 605786, 1514465, 2120251, 3028930, 4240502, 10601255, 21202510]

約数ペア:

[(1, 21202510), (2, 10601255), (5, 4240502), (7, 3028930), (10, 2120251), (14, 1514465), (35, 605786), (70, 302893), (499, 42490), (607, 34930), (998, 21245), (1214, 17465), (2495, 8498), (3035, 6986), (3493, 6070), (4249, 4990)]