21105690

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{16361}}^1$

素因数の和:16414

約数の個数: 32

約数和(自身を含む): 51834816

約数和(自身を除く): 30729126

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 43, 86, 129, 215, 258, 430, 645, 1290, 16361, 32722, 49083, 81805, 98166, 163610, 245415, 490830, 703523, 1407046, 2110569, 3517615, 4221138, 7035230, 10552845, 21105690]

約数ペア:

[(1, 21105690), (2, 10552845), (3, 7035230), (5, 4221138), (6, 3517615), (10, 2110569), (15, 1407046), (30, 703523), (43, 490830), (86, 245415), (129, 163610), (215, 98166), (258, 81805), (430, 49083), (645, 32722), (1290, 16361)]