42405020

素因数分解:

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

素因数の和:1122

約数の個数: 48

約数和(自身を含む): 102144000

約数和(自身を除く): 59738980

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 499, 607, 998, 1214, 1996, 2428, 2495, 3035, 3493, 4249, 4990, 6070, 6986, 8498, 9980, 12140, 13972, 16996, 17465, 21245, 34930, 42490, 69860, 84980, 302893, 605786, 1211572, 1514465, 2120251, 3028930, 4240502, 6057860, 8481004, 10601255, 21202510, 42405020]

約数ペア:

[(1, 42405020), (2, 21202510), (4, 10601255), (5, 8481004), (7, 6057860), (10, 4240502), (14, 3028930), (20, 2120251), (28, 1514465), (35, 1211572), (70, 605786), (140, 302893), (499, 84980), (607, 69860), (998, 42490), (1214, 34930), (1996, 21245), (2428, 17465), (2495, 16996), (3035, 13972), (3493, 12140), (4249, 9980), (4990, 8498), (6070, 6986)]