20408064765

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{179}}^1\times {\mathrm{281}}^1\times {\mathrm{2459}}^1$

素因数の和:2938

約数の個数: 64

約数和(自身を含む): 35962444800

約数和(自身を除く): 15554380035

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 179, 281, 537, 843, 895, 1405, 1969, 2459, 2685, 3091, 4215, 5907, 7377, 9273, 9845, 12295, 15455, 27049, 29535, 36885, 46365, 50299, 81147, 135245, 150897, 251495, 405735, 440161, 553289, 690979, 754485, 1320483, 1659867, 2072937, 2200805, 2766445, 3454895, 4841771, 6602415, 7600769, 8299335, 10364685, 14525313, 22802307, 24208855, 38003845, 72626565, 114011535, 123685241, 371055723, 618426205, 1360537651, 1855278615, 4081612953, 6802688255, 20408064765]

約数ペア:

[(1, 20408064765), (3, 6802688255), (5, 4081612953), (11, 1855278615), (15, 1360537651), (33, 618426205), (55, 371055723), (165, 123685241), (179, 114011535), (281, 72626565), (537, 38003845), (843, 24208855), (895, 22802307), (1405, 14525313), (1969, 10364685), (2459, 8299335), (2685, 7600769), (3091, 6602415), (4215, 4841771), (5907, 3454895), (7377, 2766445), (9273, 2200805), (9845, 2072937), (12295, 1659867), (15455, 1320483), (27049, 754485), (29535, 690979), (36885, 553289), (46365, 440161), (50299, 405735), (81147, 251495), (135245, 150897)]