21527116

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1\times {\mathrm{107}}^1$

素因数の和:250

約数の個数: 48

約数和(自身を含む): 42293664

約数和(自身を除く): 20766548

約数列:

[1, 2, 4, 13, 26, 52, 53, 73, 106, 107, 146, 212, 214, 292, 428, 689, 949, 1378, 1391, 1898, 2756, 2782, 3796, 3869, 5564, 5671, 7738, 7811, 11342, 15476, 15622, 22684, 31244, 50297, 73723, 100594, 101543, 147446, 201188, 203086, 294892, 406172, 413983, 827966, 1655932, 5381779, 10763558, 21527116]

約数ペア:

[(1, 21527116), (2, 10763558), (4, 5381779), (13, 1655932), (26, 827966), (52, 413983), (53, 406172), (73, 294892), (106, 203086), (107, 201188), (146, 147446), (212, 101543), (214, 100594), (292, 73723), (428, 50297), (689, 31244), (949, 22684), (1378, 15622), (1391, 15476), (1898, 11342), (2756, 7811), (2782, 7738), (3796, 5671), (3869, 5564)]