20568345

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1$

素因数の和:206

約数の個数: 64

約数和(自身を含む): 39813120

約数和(自身を除く): 19244775

約数列:

[1, 3, 5, 7, 15, 21, 31, 35, 71, 89, 93, 105, 155, 213, 217, 267, 355, 445, 465, 497, 623, 651, 1065, 1085, 1335, 1491, 1869, 2201, 2485, 2759, 3115, 3255, 6319, 6603, 7455, 8277, 9345, 11005, 13795, 15407, 18957, 19313, 31595, 33015, 41385, 44233, 46221, 57939, 77035, 94785, 96565, 132699, 195889, 221165, 231105, 289695, 587667, 663495, 979445, 1371223, 2938335, 4113669, 6856115, 20568345]

約数ペア:

[(1, 20568345), (3, 6856115), (5, 4113669), (7, 2938335), (15, 1371223), (21, 979445), (31, 663495), (35, 587667), (71, 289695), (89, 231105), (93, 221165), (105, 195889), (155, 132699), (213, 96565), (217, 94785), (267, 77035), (355, 57939), (445, 46221), (465, 44233), (497, 41385), (623, 33015), (651, 31595), (1065, 19313), (1085, 18957), (1335, 15407), (1491, 13795), (1869, 11005), (2201, 9345), (2485, 8277), (2759, 7455), (3115, 6603), (3255, 6319)]