20606718

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{137}}^1$

素因数の和:249

約数の個数: 64

約数和(自身を含む): 47215872

約数和(自身を除く): 26609154

約数列:

[1, 2, 3, 6, 11, 22, 33, 43, 53, 66, 86, 106, 129, 137, 159, 258, 274, 318, 411, 473, 583, 822, 946, 1166, 1419, 1507, 1749, 2279, 2838, 3014, 3498, 4521, 4558, 5891, 6837, 7261, 9042, 11782, 13674, 14522, 17673, 21783, 25069, 35346, 43566, 50138, 64801, 75207, 79871, 129602, 150414, 159742, 194403, 239613, 312223, 388806, 479226, 624446, 936669, 1873338, 3434453, 6868906, 10303359, 20606718]

約数ペア:

[(1, 20606718), (2, 10303359), (3, 6868906), (6, 3434453), (11, 1873338), (22, 936669), (33, 624446), (43, 479226), (53, 388806), (66, 312223), (86, 239613), (106, 194403), (129, 159742), (137, 150414), (159, 129602), (258, 79871), (274, 75207), (318, 64801), (411, 50138), (473, 43566), (583, 35346), (822, 25069), (946, 21783), (1166, 17673), (1419, 14522), (1507, 13674), (1749, 11782), (2279, 9042), (2838, 7261), (3014, 6837), (3498, 5891), (4521, 4558)]