20949656

素因数分解:

$2^3\times 7^2\times {\mathrm{13}}^1\times {\mathrm{4111}}^1$

素因数の和:4144

約数の個数: 48

約数和(自身を含む): 49220640

約数和(自身を除く): 28270984

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 49, 52, 56, 91, 98, 104, 182, 196, 364, 392, 637, 728, 1274, 2548, 4111, 5096, 8222, 16444, 28777, 32888, 53443, 57554, 106886, 115108, 201439, 213772, 230216, 374101, 402878, 427544, 748202, 805756, 1496404, 1611512, 2618707, 2992808, 5237414, 10474828, 20949656]

約数ペア:

[(1, 20949656), (2, 10474828), (4, 5237414), (7, 2992808), (8, 2618707), (13, 1611512), (14, 1496404), (26, 805756), (28, 748202), (49, 427544), (52, 402878), (56, 374101), (91, 230216), (98, 213772), (104, 201439), (182, 115108), (196, 106886), (364, 57554), (392, 53443), (637, 32888), (728, 28777), (1274, 16444), (2548, 8222), (4111, 5096)]