20676747

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1$

素因数の和:172

約数の個数: 64

約数和(自身を含む): 36771840

約数和(自身を除く): 16095093

約数列:

[1, 3, 7, 13, 21, 23, 37, 39, 69, 89, 91, 111, 161, 259, 267, 273, 299, 481, 483, 623, 777, 851, 897, 1157, 1443, 1869, 2047, 2093, 2553, 3293, 3367, 3471, 5957, 6141, 6279, 8099, 9879, 10101, 11063, 14329, 17871, 23051, 24297, 26611, 33189, 42809, 42987, 69153, 75739, 77441, 79833, 128427, 186277, 227217, 232323, 299663, 530173, 558831, 898989, 984607, 1590519, 2953821, 6892249, 20676747]

約数ペア:

[(1, 20676747), (3, 6892249), (7, 2953821), (13, 1590519), (21, 984607), (23, 898989), (37, 558831), (39, 530173), (69, 299663), (89, 232323), (91, 227217), (111, 186277), (161, 128427), (259, 79833), (267, 77441), (273, 75739), (299, 69153), (481, 42987), (483, 42809), (623, 33189), (777, 26611), (851, 24297), (897, 23051), (1157, 17871), (1443, 14329), (1869, 11063), (2047, 10101), (2093, 9879), (2553, 8099), (3293, 6279), (3367, 6141), (3471, 5957)]