21992138

素因数分解:

$2^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{107}}^1\times {\mathrm{277}}^1$

素因数の和:446

約数の個数: 32

約数和(自身を含む): 38911104

約数和(自身を除く): 16918966

約数列:

[1, 2, 7, 14, 53, 106, 107, 214, 277, 371, 554, 742, 749, 1498, 1939, 3878, 5671, 11342, 14681, 29362, 29639, 39697, 59278, 79394, 102767, 205534, 207473, 414946, 1570867, 3141734, 10996069, 21992138]

約数ペア:

[(1, 21992138), (2, 10996069), (7, 3141734), (14, 1570867), (53, 414946), (106, 207473), (107, 205534), (214, 102767), (277, 79394), (371, 59278), (554, 39697), (742, 29639), (749, 29362), (1498, 14681), (1939, 11342), (3878, 5671)]