19886516

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{4297}}^1$

素因数の和:4403

約数の個数: 24

約数和(自身を含む): 37908360

約数和(自身を除く): 18021844

約数列:

[1, 2, 4, 13, 26, 52, 89, 178, 356, 1157, 2314, 4297, 4628, 8594, 17188, 55861, 111722, 223444, 382433, 764866, 1529732, 4971629, 9943258, 19886516]

約数ペア:

[(1, 19886516), (2, 9943258), (4, 4971629), (13, 1529732), (26, 764866), (52, 382433), (89, 223444), (178, 111722), (356, 55861), (1157, 17188), (2314, 8594), (4297, 4628)]