40475421

素因数分解:

$3^2\times 7^2\times {\mathrm{91781}}^1$

素因数の和:91801

約数の個数: 18

約数和(自身を含む): 68010462

約数和(自身を除く): 27535041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 91781, 275343, 642467, 826029, 1927401, 4497269, 5782203, 13491807, 40475421]

約数ペア:

[(1, 40475421), (3, 13491807), (7, 5782203), (9, 4497269), (21, 1927401), (49, 826029), (63, 642467), (147, 275343), (441, 91781)]