20650492

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1$

素因数の和:226

約数の個数: 48

約数和(自身を含む): 39916800

約数和(自身を除く): 19266308

約数列:

[1, 2, 4, 19, 38, 43, 71, 76, 86, 89, 142, 172, 178, 284, 356, 817, 1349, 1634, 1691, 2698, 3053, 3268, 3382, 3827, 5396, 6106, 6319, 6764, 7654, 12212, 12638, 15308, 25276, 58007, 72713, 116014, 120061, 145426, 232028, 240122, 271717, 290852, 480244, 543434, 1086868, 5162623, 10325246, 20650492]

約数ペア:

[(1, 20650492), (2, 10325246), (4, 5162623), (19, 1086868), (38, 543434), (43, 480244), (71, 290852), (76, 271717), (86, 240122), (89, 232028), (142, 145426), (172, 120061), (178, 116014), (284, 72713), (356, 58007), (817, 25276), (1349, 15308), (1634, 12638), (1691, 12212), (2698, 7654), (3053, 6764), (3268, 6319), (3382, 6106), (3827, 5396)]