18905020

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{55603}}^1$

素因数の和:55629

約数の個数: 24

約数和(自身を含む): 42036624

約数和(自身を除く): 23131604

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 55603, 111206, 222412, 278015, 556030, 945251, 1112060, 1890502, 3781004, 4726255, 9452510, 18905020]

約数ペア:

[(1, 18905020), (2, 9452510), (4, 4726255), (5, 3781004), (10, 1890502), (17, 1112060), (20, 945251), (34, 556030), (68, 278015), (85, 222412), (170, 111206), (340, 55603)]