19941621

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1$

素因数の和:146

約数の個数: 64

約数和(自身を含む): 34836480

約数和(自身を除く): 14894859

約数列:

[1, 3, 7, 19, 21, 23, 41, 53, 57, 69, 123, 133, 159, 161, 287, 371, 399, 437, 483, 779, 861, 943, 1007, 1113, 1219, 1311, 2173, 2337, 2829, 3021, 3059, 3657, 5453, 6519, 6601, 7049, 8533, 9177, 15211, 16359, 17917, 19803, 21147, 23161, 25599, 41287, 45633, 49979, 53751, 69483, 123861, 125419, 149937, 162127, 289009, 349853, 376257, 486381, 867027, 949601, 1049559, 2848803, 6647207, 19941621]

約数ペア:

[(1, 19941621), (3, 6647207), (7, 2848803), (19, 1049559), (21, 949601), (23, 867027), (41, 486381), (53, 376257), (57, 349853), (69, 289009), (123, 162127), (133, 149937), (159, 125419), (161, 123861), (287, 69483), (371, 53751), (399, 49979), (437, 45633), (483, 41287), (779, 25599), (861, 23161), (943, 21147), (1007, 19803), (1113, 17917), (1219, 16359), (1311, 15211), (2173, 9177), (2337, 8533), (2829, 7049), (3021, 6601), (3059, 6519), (3657, 5453)]