20780984

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{19531}}^1$

素因数の和:19563

約数の個数: 32

約数和(自身を含む): 46876800

約数和(自身を除く): 26095816

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 56, 76, 133, 152, 266, 532, 1064, 19531, 39062, 78124, 136717, 156248, 273434, 371089, 546868, 742178, 1093736, 1484356, 2597623, 2968712, 5195246, 10390492, 20780984]

約数ペア:

[(1, 20780984), (2, 10390492), (4, 5195246), (7, 2968712), (8, 2597623), (14, 1484356), (19, 1093736), (28, 742178), (38, 546868), (56, 371089), (76, 273434), (133, 156248), (152, 136717), (266, 78124), (532, 39062), (1064, 19531)]