20626305

素因数分解:

$3^1\times 5^1\times 7^3\times {\mathrm{19}}^1\times {\mathrm{211}}^1$

素因数の和:259

約数の個数: 64

約数和(自身を含む): 40704000

約数和(自身を除く): 20077695

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 49, 57, 95, 105, 133, 147, 211, 245, 285, 343, 399, 633, 665, 735, 931, 1029, 1055, 1477, 1715, 1995, 2793, 3165, 4009, 4431, 4655, 5145, 6517, 7385, 10339, 12027, 13965, 19551, 20045, 22155, 28063, 31017, 32585, 51695, 60135, 72373, 84189, 97755, 140315, 155085, 196441, 217119, 361865, 420945, 589323, 982205, 1085595, 1375087, 2946615, 4125261, 6875435, 20626305]

約数ペア:

[(1, 20626305), (3, 6875435), (5, 4125261), (7, 2946615), (15, 1375087), (19, 1085595), (21, 982205), (35, 589323), (49, 420945), (57, 361865), (95, 217119), (105, 196441), (133, 155085), (147, 140315), (211, 97755), (245, 84189), (285, 72373), (343, 60135), (399, 51695), (633, 32585), (665, 31017), (735, 28063), (931, 22155), (1029, 20045), (1055, 19551), (1477, 13965), (1715, 12027), (1995, 10339), (2793, 7385), (3165, 6517), (4009, 5145), (4431, 4655)]