21241857

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{199}}^1$

素因数の和:262

約数の個数: 64

約数和(自身を含む): 38707200

約数和(自身を除く): 17465343

約数列:

[1, 3, 7, 13, 17, 21, 23, 39, 51, 69, 91, 119, 161, 199, 221, 273, 299, 357, 391, 483, 597, 663, 897, 1173, 1393, 1547, 2093, 2587, 2737, 3383, 4179, 4577, 4641, 5083, 6279, 7761, 8211, 10149, 13731, 15249, 18109, 23681, 32039, 35581, 43979, 54327, 59501, 71043, 77809, 96117, 106743, 131937, 178503, 233427, 307853, 416507, 544663, 923559, 1011517, 1249521, 1633989, 3034551, 7080619, 21241857]

約数ペア:

[(1, 21241857), (3, 7080619), (7, 3034551), (13, 1633989), (17, 1249521), (21, 1011517), (23, 923559), (39, 544663), (51, 416507), (69, 307853), (91, 233427), (119, 178503), (161, 131937), (199, 106743), (221, 96117), (273, 77809), (299, 71043), (357, 59501), (391, 54327), (483, 43979), (597, 35581), (663, 32039), (897, 23681), (1173, 18109), (1393, 15249), (1547, 13731), (2093, 10149), (2587, 8211), (2737, 7761), (3383, 6279), (4179, 5083), (4577, 4641)]