20887589645

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{53}}^1\times {\mathrm{73}}^1\times {\mathrm{6389}}^1$

素因数の和:6546

約数の個数: 48

約数和(自身を含む): 28036815120

約数和(自身を除く): 7149225475

約数列:

[1, 5, 13, 53, 65, 73, 169, 265, 365, 689, 845, 949, 3445, 3869, 4745, 6389, 8957, 12337, 19345, 31945, 44785, 50297, 61685, 83057, 251485, 338617, 415285, 466397, 653861, 1079741, 1693085, 2331985, 3269305, 4402021, 5398705, 6063161, 22010105, 24719041, 30315805, 57226273, 78821093, 123595205, 286131365, 321347533, 394105465, 1606737665, 4177517929, 20887589645]

約数ペア:

[(1, 20887589645), (5, 4177517929), (13, 1606737665), (53, 394105465), (65, 321347533), (73, 286131365), (169, 123595205), (265, 78821093), (365, 57226273), (689, 30315805), (845, 24719041), (949, 22010105), (3445, 6063161), (3869, 5398705), (4745, 4402021), (6389, 3269305), (8957, 2331985), (12337, 1693085), (19345, 1079741), (31945, 653861), (44785, 466397), (50297, 415285), (61685, 338617), (83057, 251485)]