201779991

素因数分解:

$3^4\times 7^2\times {\mathrm{50839}}^1$

素因数の和:50865

約数の個数: 30

約数和(自身を含む): 350643480

約数和(自身を除く): 148863489

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 441, 567, 1323, 3969, 50839, 152517, 355873, 457551, 1067619, 1372653, 2491111, 3202857, 4117959, 7473333, 9608571, 22419999, 28825713, 67259997, 201779991]

約数ペア:

[(1, 201779991), (3, 67259997), (7, 28825713), (9, 22419999), (21, 9608571), (27, 7473333), (49, 4117959), (63, 3202857), (81, 2491111), (147, 1372653), (189, 1067619), (441, 457551), (567, 355873), (1323, 152517), (3969, 50839)]