21001356

素因数分解:

$2^2\times 3^4\times {\mathrm{53}}^1\times {\mathrm{1223}}^1$

素因数の和:1292

約数の個数: 60

約数和(自身を含む): 55983312

約数和(自身を除く): 34981956

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 53, 54, 81, 106, 108, 159, 162, 212, 318, 324, 477, 636, 954, 1223, 1431, 1908, 2446, 2862, 3669, 4293, 4892, 5724, 7338, 8586, 11007, 14676, 17172, 22014, 33021, 44028, 64819, 66042, 99063, 129638, 132084, 194457, 198126, 259276, 388914, 396252, 583371, 777828, 1166742, 1750113, 2333484, 3500226, 5250339, 7000452, 10500678, 21001356]

約数ペア:

[(1, 21001356), (2, 10500678), (3, 7000452), (4, 5250339), (6, 3500226), (9, 2333484), (12, 1750113), (18, 1166742), (27, 777828), (36, 583371), (53, 396252), (54, 388914), (81, 259276), (106, 198126), (108, 194457), (159, 132084), (162, 129638), (212, 99063), (318, 66042), (324, 64819), (477, 44028), (636, 33021), (954, 22014), (1223, 17172), (1431, 14676), (1908, 11007), (2446, 8586), (2862, 7338), (3669, 5724), (4293, 4892)]