20389635

素因数分解:

$3^2\times 5^1\times 7^3\times {\mathrm{1321}}^1$

素因数の和:1353

約数の個数: 48

約数和(自身を含む): 41246400

約数和(自身を除く): 20856765

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 49, 63, 105, 147, 245, 315, 343, 441, 735, 1029, 1321, 1715, 2205, 3087, 3963, 5145, 6605, 9247, 11889, 15435, 19815, 27741, 46235, 59445, 64729, 83223, 138705, 194187, 323645, 416115, 453103, 582561, 970935, 1359309, 2265515, 2912805, 4077927, 6796545, 20389635]

約数ペア:

[(1, 20389635), (3, 6796545), (5, 4077927), (7, 2912805), (9, 2265515), (15, 1359309), (21, 970935), (35, 582561), (45, 453103), (49, 416115), (63, 323645), (105, 194187), (147, 138705), (245, 83223), (315, 64729), (343, 59445), (441, 46235), (735, 27741), (1029, 19815), (1321, 15435), (1715, 11889), (2205, 9247), (3087, 6605), (3963, 5145)]