20921012

素因数分解:

$2^2\times 7^1\times {\mathrm{281}}^1\times {\mathrm{2659}}^1$

素因数の和:2951

約数の個数: 24

約数和(自身を含む): 42006720

約数和(自身を除く): 21085708

約数列:

[1, 2, 4, 7, 14, 28, 281, 562, 1124, 1967, 2659, 3934, 5318, 7868, 10636, 18613, 37226, 74452, 747179, 1494358, 2988716, 5230253, 10460506, 20921012]

約数ペア:

[(1, 20921012), (2, 10460506), (4, 5230253), (7, 2988716), (14, 1494358), (28, 747179), (281, 74452), (562, 37226), (1124, 18613), (1967, 10636), (2659, 7868), (3934, 5318)]