20683815

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{2797}}^1$

素因数の和:2851

約数の個数: 32

約数和(自身を含む): 36262080

約数和(自身を除く): 15578265

約数列:

[1, 3, 5, 15, 17, 29, 51, 85, 87, 145, 255, 435, 493, 1479, 2465, 2797, 7395, 8391, 13985, 41955, 47549, 81113, 142647, 237745, 243339, 405565, 713235, 1216695, 1378921, 4136763, 6894605, 20683815]

約数ペア:

[(1, 20683815), (3, 6894605), (5, 4136763), (15, 1378921), (17, 1216695), (29, 713235), (51, 405565), (85, 243339), (87, 237745), (145, 142647), (255, 81113), (435, 47549), (493, 41955), (1479, 13985), (2465, 8391), (2797, 7395)]