20738620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{3613}}^1$

素因数の和:3670

約数の個数: 48

約数和(自身を含む): 51000768

約数和(自身を除く): 30262148

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 41, 70, 82, 140, 164, 205, 287, 410, 574, 820, 1148, 1435, 2870, 3613, 5740, 7226, 14452, 18065, 25291, 36130, 50582, 72260, 101164, 126455, 148133, 252910, 296266, 505820, 592532, 740665, 1036931, 1481330, 2073862, 2962660, 4147724, 5184655, 10369310, 20738620]

約数ペア:

[(1, 20738620), (2, 10369310), (4, 5184655), (5, 4147724), (7, 2962660), (10, 2073862), (14, 1481330), (20, 1036931), (28, 740665), (35, 592532), (41, 505820), (70, 296266), (82, 252910), (140, 148133), (164, 126455), (205, 101164), (287, 72260), (410, 50582), (574, 36130), (820, 25291), (1148, 18065), (1435, 14452), (2870, 7226), (3613, 5740)]