20901244

素因数分解:

$2^2\times 7^2\times {\mathrm{13}}^2\times {\mathrm{631}}^1$

素因数の和:675

約数の個数: 54

約数和(自身を含む): 46146744

約数和(自身を除く): 25245500

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 49, 52, 91, 98, 169, 182, 196, 338, 364, 631, 637, 676, 1183, 1262, 1274, 2366, 2524, 2548, 4417, 4732, 8203, 8281, 8834, 16406, 16562, 17668, 30919, 32812, 33124, 57421, 61838, 106639, 114842, 123676, 213278, 229684, 401947, 426556, 746473, 803894, 1492946, 1607788, 2985892, 5225311, 10450622, 20901244]

約数ペア:

[(1, 20901244), (2, 10450622), (4, 5225311), (7, 2985892), (13, 1607788), (14, 1492946), (26, 803894), (28, 746473), (49, 426556), (52, 401947), (91, 229684), (98, 213278), (169, 123676), (182, 114842), (196, 106639), (338, 61838), (364, 57421), (631, 33124), (637, 32812), (676, 30919), (1183, 17668), (1262, 16562), (1274, 16406), (2366, 8834), (2524, 8281), (2548, 8203), (4417, 4732)]