20281570204

素因数分解:

$2^2\times 7^2\times {\mathrm{41}}^1\times {\mathrm{2523839}}^1$

素因数の和:2523898

約数の個数: 36

約数和(自身を含む): 42294510720

約数和(自身を除く): 22012940516

約数列:

[1, 2, 4, 7, 14, 28, 41, 49, 82, 98, 164, 196, 287, 574, 1148, 2009, 4018, 8036, 2523839, 5047678, 10095356, 17666873, 35333746, 70667492, 103477399, 123668111, 206954798, 247336222, 413909596, 494672444, 724341793, 1448683586, 2897367172, 5070392551, 10140785102, 20281570204]

約数ペア:

[(1, 20281570204), (2, 10140785102), (4, 5070392551), (7, 2897367172), (14, 1448683586), (28, 724341793), (41, 494672444), (49, 413909596), (82, 247336222), (98, 206954798), (164, 123668111), (196, 103477399), (287, 70667492), (574, 35333746), (1148, 17666873), (2009, 10095356), (4018, 5047678), (8036, 2523839)]