20085585

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{83}}^1$

素因数の和:194

約数の個数: 64

約数和(自身を含む): 37594368

約数和(自身を除く): 17508783

約数列:

[1, 3, 5, 13, 15, 17, 39, 51, 65, 73, 83, 85, 195, 219, 221, 249, 255, 365, 415, 663, 949, 1079, 1095, 1105, 1241, 1245, 1411, 2847, 3237, 3315, 3723, 4233, 4745, 5395, 6059, 6205, 7055, 14235, 16133, 16185, 18177, 18343, 18615, 21165, 30295, 48399, 55029, 78767, 80665, 90885, 91715, 103003, 236301, 241995, 275145, 309009, 393835, 515015, 1181505, 1339039, 1545045, 4017117, 6695195, 20085585]

約数ペア:

[(1, 20085585), (3, 6695195), (5, 4017117), (13, 1545045), (15, 1339039), (17, 1181505), (39, 515015), (51, 393835), (65, 309009), (73, 275145), (83, 241995), (85, 236301), (195, 103003), (219, 91715), (221, 90885), (249, 80665), (255, 78767), (365, 55029), (415, 48399), (663, 30295), (949, 21165), (1079, 18615), (1095, 18343), (1105, 18177), (1241, 16185), (1245, 16133), (1411, 14235), (2847, 7055), (3237, 6205), (3315, 6059), (3723, 5395), (4233, 4745)]