19783701

素因数分解:

$3^2\times 7^2\times {\mathrm{113}}^1\times {\mathrm{397}}^1$

素因数の和:530

約数の個数: 36

約数和(自身を含む): 33620652

約数和(自身を除く): 13836951

約数列:

[1, 3, 7, 9, 21, 49, 63, 113, 147, 339, 397, 441, 791, 1017, 1191, 2373, 2779, 3573, 5537, 7119, 8337, 16611, 19453, 25011, 44861, 49833, 58359, 134583, 175077, 314027, 403749, 942081, 2198189, 2826243, 6594567, 19783701]

約数ペア:

[(1, 19783701), (3, 6594567), (7, 2826243), (9, 2198189), (21, 942081), (49, 403749), (63, 314027), (113, 175077), (147, 134583), (339, 58359), (397, 49833), (441, 44861), (791, 25011), (1017, 19453), (1191, 16611), (2373, 8337), (2779, 7119), (3573, 5537)]