21520512247

素因数分解:

${\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{137}}^1\times {\mathrm{2897}}^1$

素因数の和:3187

約数の個数: 32

約数和(自身を含む): 24142612032

約数和(自身を除く): 2622099785

約数列:

[1, 13, 43, 97, 137, 559, 1261, 1781, 2897, 4171, 5891, 13289, 37661, 54223, 76583, 124571, 172757, 281009, 396889, 571427, 1619423, 3653117, 5159557, 7428551, 12083387, 17066227, 38498233, 157084031, 221860951, 500477029, 1655424019, 21520512247]

約数ペア:

[(1, 21520512247), (13, 1655424019), (43, 500477029), (97, 221860951), (137, 157084031), (559, 38498233), (1261, 17066227), (1781, 12083387), (2897, 7428551), (4171, 5159557), (5891, 3653117), (13289, 1619423), (37661, 571427), (54223, 396889), (76583, 281009), (124571, 172757)]