81862165

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^3\times {\mathrm{31}}^1$

素因数の和:111

約数の個数: 64

約数和(自身を含む): 133447680

約数和(自身を除く): 51585515

約数列:

[1, 5, 7, 11, 19, 31, 35, 55, 77, 95, 133, 155, 209, 217, 341, 361, 385, 589, 665, 1045, 1085, 1463, 1705, 1805, 2387, 2527, 2945, 3971, 4123, 6479, 6859, 7315, 11191, 11935, 12635, 19855, 20615, 27797, 32395, 34295, 45353, 48013, 55955, 75449, 78337, 123101, 138985, 212629, 226765, 240065, 377245, 391685, 528143, 615505, 861707, 1063145, 1488403, 2338919, 2640715, 4308535, 7442015, 11694595, 16372433, 81862165]

約数ペア:

[(1, 81862165), (5, 16372433), (7, 11694595), (11, 7442015), (19, 4308535), (31, 2640715), (35, 2338919), (55, 1488403), (77, 1063145), (95, 861707), (133, 615505), (155, 528143), (209, 391685), (217, 377245), (341, 240065), (361, 226765), (385, 212629), (589, 138985), (665, 123101), (1045, 78337), (1085, 75449), (1463, 55955), (1705, 48013), (1805, 45353), (2387, 34295), (2527, 32395), (2945, 27797), (3971, 20615), (4123, 19855), (6479, 12635), (6859, 11935), (7315, 11191)]