21199220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{151423}}^1$

素因数の和:151439

約数の個数: 24

約数和(自身を含む): 50878464

約数和(自身を除く): 29679244

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 151423, 302846, 605692, 757115, 1059961, 1514230, 2119922, 3028460, 4239844, 5299805, 10599610, 21199220]

約数ペア:

[(1, 21199220), (2, 10599610), (4, 5299805), (5, 4239844), (7, 3028460), (10, 2119922), (14, 1514230), (20, 1059961), (28, 757115), (35, 605692), (70, 302846), (140, 151423)]