19489977

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{223}}^1$

素因数の和:331

約数の個数: 40

約数和(自身を含む): 31874304

約数和(自身を除く): 12384327

約数列:

[1, 3, 9, 13, 27, 39, 81, 83, 117, 223, 249, 351, 669, 747, 1053, 1079, 2007, 2241, 2899, 3237, 6021, 6723, 8697, 9711, 18063, 18509, 26091, 29133, 55527, 78273, 87399, 166581, 234819, 240617, 499743, 721851, 1499229, 2165553, 6496659, 19489977]

約数ペア:

[(1, 19489977), (3, 6496659), (9, 2165553), (13, 1499229), (27, 721851), (39, 499743), (81, 240617), (83, 234819), (117, 166581), (223, 87399), (249, 78273), (351, 55527), (669, 29133), (747, 26091), (1053, 18509), (1079, 18063), (2007, 9711), (2241, 8697), (2899, 6723), (3237, 6021)]