201778227

素因数分解:

$3^2\times 7^2\times {\mathrm{457547}}^1$

素因数の和:457567

約数の個数: 18

約数和(自身を含む): 339043068

約数和(自身を除く): 137264841

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 457547, 1372641, 3202829, 4117923, 9608487, 22419803, 28825461, 67259409, 201778227]

約数ペア:

[(1, 201778227), (3, 67259409), (7, 28825461), (9, 22419803), (21, 9608487), (49, 4117923), (63, 3202829), (147, 1372641), (441, 457547)]