1381330495

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{19891}}^1$

素因数の和:19975

約数の個数: 32

約数和(自身を含む): 1890535680

約数和(自身を除く): 509205185

約数列:

[1, 5, 17, 19, 43, 85, 95, 215, 323, 731, 817, 1615, 3655, 4085, 13889, 19891, 69445, 99455, 338147, 377929, 855313, 1690735, 1889645, 4276565, 6424793, 14540321, 16250947, 32123965, 72701605, 81254735, 276266099, 1381330495]

約数ペア:

[(1, 1381330495), (5, 276266099), (17, 81254735), (19, 72701605), (43, 32123965), (85, 16250947), (95, 14540321), (215, 6424793), (323, 4276565), (731, 1889645), (817, 1690735), (1615, 855313), (3655, 377929), (4085, 338147), (13889, 99455), (19891, 69445)]