21212499

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{229}}^1\times {\mathrm{401}}^1$

素因数の和:651

約数の個数: 32

約数和(自身を含む): 35504640

約数和(自身を除く): 14292141

約数列:

[1, 3, 7, 11, 21, 33, 77, 229, 231, 401, 687, 1203, 1603, 2519, 2807, 4411, 4809, 7557, 8421, 13233, 17633, 30877, 52899, 91829, 92631, 275487, 642803, 1010119, 1928409, 3030357, 7070833, 21212499]

約数ペア:

[(1, 21212499), (3, 7070833), (7, 3030357), (11, 1928409), (21, 1010119), (33, 642803), (77, 275487), (229, 92631), (231, 91829), (401, 52899), (687, 30877), (1203, 17633), (1603, 13233), (2519, 8421), (2807, 7557), (4411, 4809)]