20148388

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{431}}^1$

素因数の和:508

約数の個数: 48

約数和(自身を含む): 40642560

約数和(自身を除く): 20494172

約数列:

[1, 2, 4, 13, 26, 29, 31, 52, 58, 62, 116, 124, 377, 403, 431, 754, 806, 862, 899, 1508, 1612, 1724, 1798, 3596, 5603, 11206, 11687, 12499, 13361, 22412, 23374, 24998, 26722, 46748, 49996, 53444, 162487, 173693, 324974, 347386, 387469, 649948, 694772, 774938, 1549876, 5037097, 10074194, 20148388]

約数ペア:

[(1, 20148388), (2, 10074194), (4, 5037097), (13, 1549876), (26, 774938), (29, 694772), (31, 649948), (52, 387469), (58, 347386), (62, 324974), (116, 173693), (124, 162487), (377, 53444), (403, 49996), (431, 46748), (754, 26722), (806, 24998), (862, 23374), (899, 22412), (1508, 13361), (1612, 12499), (1724, 11687), (1798, 11206), (3596, 5603)]