18910227

素因数分解:

$3^1\times 7^2\times {\mathrm{197}}^1\times {\mathrm{653}}^1$

素因数の和:867

約数の個数: 24

約数和(自身を含む): 29524176

約数和(自身を除く): 10613949

約数列:

[1, 3, 7, 21, 49, 147, 197, 591, 653, 1379, 1959, 4137, 4571, 9653, 13713, 28959, 31997, 95991, 128641, 385923, 900487, 2701461, 6303409, 18910227]

約数ペア:

[(1, 18910227), (3, 6303409), (7, 2701461), (21, 900487), (49, 385923), (147, 128641), (197, 95991), (591, 31997), (653, 28959), (1379, 13713), (1959, 9653), (4137, 4571)]