21921156

素因数分解:

$2^2\times 3^2\times {\mathrm{643}}^1\times {\mathrm{947}}^1$

素因数の和:1600

約数の個数: 36

約数和(自身を含む): 55556592

約数和(自身を除く): 33635436

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 643, 947, 1286, 1894, 1929, 2572, 2841, 3788, 3858, 5682, 5787, 7716, 8523, 11364, 11574, 17046, 23148, 34092, 608921, 1217842, 1826763, 2435684, 3653526, 5480289, 7307052, 10960578, 21921156]

約数ペア:

[(1, 21921156), (2, 10960578), (3, 7307052), (4, 5480289), (6, 3653526), (9, 2435684), (12, 1826763), (18, 1217842), (36, 608921), (643, 34092), (947, 23148), (1286, 17046), (1894, 11574), (1929, 11364), (2572, 8523), (2841, 7716), (3788, 5787), (3858, 5682)]