21580236

素因数分解:

$2^2\times 3^3\times {\mathrm{211}}^1\times {\mathrm{947}}^1$

素因数の和:1171

約数の個数: 48

約数和(自身を含む): 56273280

約数和(自身を除く): 34693044

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 108, 211, 422, 633, 844, 947, 1266, 1894, 1899, 2532, 2841, 3788, 3798, 5682, 5697, 7596, 8523, 11364, 11394, 17046, 22788, 25569, 34092, 51138, 102276, 199817, 399634, 599451, 799268, 1198902, 1798353, 2397804, 3596706, 5395059, 7193412, 10790118, 21580236]

約数ペア:

[(1, 21580236), (2, 10790118), (3, 7193412), (4, 5395059), (6, 3596706), (9, 2397804), (12, 1798353), (18, 1198902), (27, 799268), (36, 599451), (54, 399634), (108, 199817), (211, 102276), (422, 51138), (633, 34092), (844, 25569), (947, 22788), (1266, 17046), (1894, 11394), (1899, 11364), (2532, 8523), (2841, 7596), (3788, 5697), (3798, 5682)]