20859765

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{179}}^1\times {\mathrm{457}}^1$

素因数の和:661

約数の個数: 32

約数和(自身を含む): 35614080

約数和(自身を除く): 14754315

約数列:

[1, 3, 5, 15, 17, 51, 85, 179, 255, 457, 537, 895, 1371, 2285, 2685, 3043, 6855, 7769, 9129, 15215, 23307, 38845, 45645, 81803, 116535, 245409, 409015, 1227045, 1390651, 4171953, 6953255, 20859765]

約数ペア:

[(1, 20859765), (3, 6953255), (5, 4171953), (15, 1390651), (17, 1227045), (51, 409015), (85, 245409), (179, 116535), (255, 81803), (457, 45645), (537, 38845), (895, 23307), (1371, 15215), (2285, 9129), (2685, 7769), (3043, 6855)]