21205782

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^2\times {\mathrm{6971}}^1$

素因数の和:7005

約数の個数: 36

約数和(自身を含む): 49759164

約数和(自身を除く): 28553382

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 78, 117, 169, 234, 338, 507, 1014, 1521, 3042, 6971, 13942, 20913, 41826, 62739, 90623, 125478, 181246, 271869, 543738, 815607, 1178099, 1631214, 2356198, 3534297, 7068594, 10602891, 21205782]

約数ペア:

[(1, 21205782), (2, 10602891), (3, 7068594), (6, 3534297), (9, 2356198), (13, 1631214), (18, 1178099), (26, 815607), (39, 543738), (78, 271869), (117, 181246), (169, 125478), (234, 90623), (338, 62739), (507, 41826), (1014, 20913), (1521, 13942), (3042, 6971)]