17919880

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{293}}^1$

素因数の和:454

約数の個数: 64

約数和(自身を含む): 44452800

約数和(自身を除く): 26532920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 139, 220, 278, 293, 440, 556, 586, 695, 1112, 1172, 1390, 1465, 1529, 2344, 2780, 2930, 3058, 3223, 5560, 5860, 6116, 6446, 7645, 11720, 12232, 12892, 15290, 16115, 25784, 30580, 32230, 40727, 61160, 64460, 81454, 128920, 162908, 203635, 325816, 407270, 447997, 814540, 895994, 1629080, 1791988, 2239985, 3583976, 4479970, 8959940, 17919880]

約数ペア:

[(1, 17919880), (2, 8959940), (4, 4479970), (5, 3583976), (8, 2239985), (10, 1791988), (11, 1629080), (20, 895994), (22, 814540), (40, 447997), (44, 407270), (55, 325816), (88, 203635), (110, 162908), (139, 128920), (220, 81454), (278, 64460), (293, 61160), (440, 40727), (556, 32230), (586, 30580), (695, 25784), (1112, 16115), (1172, 15290), (1390, 12892), (1465, 12232), (1529, 11720), (2344, 7645), (2780, 6446), (2930, 6116), (3058, 5860), (3223, 5560)]