21672765

素因数分解:

$3^4\times 5^1\times {\mathrm{59}}^1\times {\mathrm{907}}^1$

素因数の和:983

約数の個数: 40

約数和(自身を含む): 39552480

約数和(自身を除く): 17879715

約数列:

[1, 3, 5, 9, 15, 27, 45, 59, 81, 135, 177, 295, 405, 531, 885, 907, 1593, 2655, 2721, 4535, 4779, 7965, 8163, 13605, 23895, 24489, 40815, 53513, 73467, 122445, 160539, 267565, 367335, 481617, 802695, 1444851, 2408085, 4334553, 7224255, 21672765]

約数ペア:

[(1, 21672765), (3, 7224255), (5, 4334553), (9, 2408085), (15, 1444851), (27, 802695), (45, 481617), (59, 367335), (81, 267565), (135, 160539), (177, 122445), (295, 73467), (405, 53513), (531, 40815), (885, 24489), (907, 23895), (1593, 13605), (2655, 8163), (2721, 7965), (4535, 4779)]