20885060

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{241}}^1\times {\mathrm{619}}^1$

素因数の和:876

約数の個数: 48

約数和(自身を含む): 50413440

約数和(自身を除く): 29528380

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 241, 482, 619, 964, 1205, 1238, 1687, 2410, 2476, 3095, 3374, 4333, 4820, 6190, 6748, 8435, 8666, 12380, 16870, 17332, 21665, 33740, 43330, 86660, 149179, 298358, 596716, 745895, 1044253, 1491790, 2088506, 2983580, 4177012, 5221265, 10442530, 20885060]

約数ペア:

[(1, 20885060), (2, 10442530), (4, 5221265), (5, 4177012), (7, 2983580), (10, 2088506), (14, 1491790), (20, 1044253), (28, 745895), (35, 596716), (70, 298358), (140, 149179), (241, 86660), (482, 43330), (619, 33740), (964, 21665), (1205, 17332), (1238, 16870), (1687, 12380), (2410, 8666), (2476, 8435), (3095, 6748), (3374, 6190), (4333, 4820)]