20646885

素因数分解:

$3^1\times 5^1\times 7^3\times {\mathrm{4013}}^1$

素因数の和:4042

約数の個数: 32

約数和(自身を含む): 38534400

約数和(自身を除く): 17887515

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 343, 735, 1029, 1715, 4013, 5145, 12039, 20065, 28091, 60195, 84273, 140455, 196637, 421365, 589911, 983185, 1376459, 2949555, 4129377, 6882295, 20646885]

約数ペア:

[(1, 20646885), (3, 6882295), (5, 4129377), (7, 2949555), (15, 1376459), (21, 983185), (35, 589911), (49, 421365), (105, 196637), (147, 140455), (245, 84273), (343, 60195), (735, 28091), (1029, 20065), (1715, 12039), (4013, 5145)]