21422457

素因数分解:

$3^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{1567}}^1$

素因数の和:1618

約数の個数: 36

約数和(自身を含む): 37180416

約数和(自身を除く): 15757959

約数列:

[1, 3, 7, 9, 21, 31, 49, 63, 93, 147, 217, 279, 441, 651, 1519, 1567, 1953, 4557, 4701, 10969, 13671, 14103, 32907, 48577, 76783, 98721, 145731, 230349, 340039, 437193, 691047, 1020117, 2380273, 3060351, 7140819, 21422457]

約数ペア:

[(1, 21422457), (3, 7140819), (7, 3060351), (9, 2380273), (21, 1020117), (31, 691047), (49, 437193), (63, 340039), (93, 230349), (147, 145731), (217, 98721), (279, 76783), (441, 48577), (651, 32907), (1519, 14103), (1567, 13671), (1953, 10969), (4557, 4701)]