21762640

素因数分解:

$2^4\times 5^1\times {\mathrm{199}}^1\times {\mathrm{1367}}^1$

素因数の和:1579

約数の個数: 40

約数和(自身を含む): 50889600

約数和(自身を除く): 29126960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 199, 398, 796, 995, 1367, 1592, 1990, 2734, 3184, 3980, 5468, 6835, 7960, 10936, 13670, 15920, 21872, 27340, 54680, 109360, 272033, 544066, 1088132, 1360165, 2176264, 2720330, 4352528, 5440660, 10881320, 21762640]

約数ペア:

[(1, 21762640), (2, 10881320), (4, 5440660), (5, 4352528), (8, 2720330), (10, 2176264), (16, 1360165), (20, 1088132), (40, 544066), (80, 272033), (199, 109360), (398, 54680), (796, 27340), (995, 21872), (1367, 15920), (1592, 13670), (1990, 10936), (2734, 7960), (3184, 6835), (3980, 5468)]