19715735

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1\times {\mathrm{97}}^1$

素因数の和:227

約数の個数: 32

約数和(自身を含む): 26671680

約数和(自身を除く): 6955945

約数列:

[1, 5, 13, 53, 59, 65, 97, 265, 295, 485, 689, 767, 1261, 3127, 3445, 3835, 5141, 5723, 6305, 15635, 25705, 28615, 40651, 66833, 74399, 203255, 303319, 334165, 371995, 1516595, 3943147, 19715735]

約数ペア:

[(1, 19715735), (5, 3943147), (13, 1516595), (53, 371995), (59, 334165), (65, 303319), (97, 203255), (265, 74399), (295, 66833), (485, 40651), (689, 28615), (767, 25705), (1261, 15635), (3127, 6305), (3445, 5723), (3835, 5141)]