218042013

素因数分解:

$3^1\times 7^4\times {\mathrm{30271}}^1$

素因数の和:30302

約数の個数: 20

約数和(自身を含む): 339167488

約数和(自身を除く): 121125475

約数列:

[1, 3, 7, 21, 49, 147, 343, 1029, 2401, 7203, 30271, 90813, 211897, 635691, 1483279, 4449837, 10382953, 31148859, 72680671, 218042013]

約数ペア:

[(1, 218042013), (3, 72680671), (7, 31148859), (21, 10382953), (49, 4449837), (147, 1483279), (343, 635691), (1029, 211897), (2401, 90813), (7203, 30271)]