1388658460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{2531}}^1\times {\mathrm{3919}}^1$

素因数の和:6466

約数の個数: 48

約数和(自身を含む): 3334947840

約数和(自身を除く): 1946289380

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 2531, 3919, 5062, 7838, 10124, 12655, 15676, 17717, 19595, 25310, 27433, 35434, 39190, 50620, 54866, 70868, 78380, 88585, 109732, 137165, 177170, 274330, 354340, 548660, 9918989, 19837978, 39675956, 49594945, 69432923, 99189890, 138865846, 198379780, 277731692, 347164615, 694329230, 1388658460]

約数ペア:

[(1, 1388658460), (2, 694329230), (4, 347164615), (5, 277731692), (7, 198379780), (10, 138865846), (14, 99189890), (20, 69432923), (28, 49594945), (35, 39675956), (70, 19837978), (140, 9918989), (2531, 548660), (3919, 354340), (5062, 274330), (7838, 177170), (10124, 137165), (12655, 109732), (15676, 88585), (17717, 78380), (19595, 70868), (25310, 54866), (27433, 50620), (35434, 39190)]