21355908

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{2621}}^1$

素因数の和:2732

約数の個数: 48

約数和(自身を含む): 57558144

約数和(自身を除く): 36202236

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 97, 194, 291, 388, 582, 679, 1164, 1358, 2037, 2621, 2716, 4074, 5242, 7863, 8148, 10484, 15726, 18347, 31452, 36694, 55041, 73388, 110082, 220164, 254237, 508474, 762711, 1016948, 1525422, 1779659, 3050844, 3559318, 5338977, 7118636, 10677954, 21355908]

約数ペア:

[(1, 21355908), (2, 10677954), (3, 7118636), (4, 5338977), (6, 3559318), (7, 3050844), (12, 1779659), (14, 1525422), (21, 1016948), (28, 762711), (42, 508474), (84, 254237), (97, 220164), (194, 110082), (291, 73388), (388, 55041), (582, 36694), (679, 31452), (1164, 18347), (1358, 15726), (2037, 10484), (2621, 8148), (2716, 7863), (4074, 5242)]