21494824

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^2$

素因数の和:202

約数の個数: 48

約数和(自身を含む): 45096660

約数和(自身を除く): 23601836

約数列:

[1, 2, 4, 8, 13, 26, 41, 52, 71, 82, 104, 142, 164, 284, 328, 533, 568, 923, 1066, 1846, 2132, 2911, 3692, 4264, 5041, 5822, 7384, 10082, 11644, 20164, 23288, 37843, 40328, 65533, 75686, 131066, 151372, 206681, 262132, 302744, 413362, 524264, 826724, 1653448, 2686853, 5373706, 10747412, 21494824]

約数ペア:

[(1, 21494824), (2, 10747412), (4, 5373706), (8, 2686853), (13, 1653448), (26, 826724), (41, 524264), (52, 413362), (71, 302744), (82, 262132), (104, 206681), (142, 151372), (164, 131066), (284, 75686), (328, 65533), (533, 40328), (568, 37843), (923, 23288), (1066, 20164), (1846, 11644), (2132, 10082), (2911, 7384), (3692, 5822), (4264, 5041)]