20197611

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{263}}^1$

素因数の和:352

約数の個数: 48

約数和(自身を含む): 35582976

約数和(自身を除く): 15385365

約数列:

[1, 3, 7, 9, 21, 23, 53, 63, 69, 159, 161, 207, 263, 371, 477, 483, 789, 1113, 1219, 1449, 1841, 2367, 3339, 3657, 5523, 6049, 8533, 10971, 13939, 16569, 18147, 25599, 41817, 42343, 54441, 76797, 97573, 125451, 127029, 292719, 320597, 381087, 878157, 961791, 2244179, 2885373, 6732537, 20197611]

約数ペア:

[(1, 20197611), (3, 6732537), (7, 2885373), (9, 2244179), (21, 961791), (23, 878157), (53, 381087), (63, 320597), (69, 292719), (159, 127029), (161, 125451), (207, 97573), (263, 76797), (371, 54441), (477, 42343), (483, 41817), (789, 25599), (1113, 18147), (1219, 16569), (1449, 13939), (1841, 10971), (2367, 8533), (3339, 6049), (3657, 5523)]