20342775

素因数分解:

$3^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{199}}^1$

素因数の和:288

約数の個数: 48

約数和(自身を含む): 35712000

約数和(自身を除く): 15369225

約数列:

[1, 3, 5, 15, 25, 29, 47, 75, 87, 141, 145, 199, 235, 435, 597, 705, 725, 995, 1175, 1363, 2175, 2985, 3525, 4089, 4975, 5771, 6815, 9353, 14925, 17313, 20445, 28059, 28855, 34075, 46765, 86565, 102225, 140295, 144275, 233825, 271237, 432825, 701475, 813711, 1356185, 4068555, 6780925, 20342775]

約数ペア:

[(1, 20342775), (3, 6780925), (5, 4068555), (15, 1356185), (25, 813711), (29, 701475), (47, 432825), (75, 271237), (87, 233825), (141, 144275), (145, 140295), (199, 102225), (235, 86565), (435, 46765), (597, 34075), (705, 28855), (725, 28059), (995, 20445), (1175, 17313), (1363, 14925), (2175, 9353), (2985, 6815), (3525, 5771), (4089, 4975)]