19541480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{691}}^1$

素因数の和:810

約数の個数: 64

約数和(自身を含む): 50820480

約数和(自身を除く): 31279000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 101, 140, 202, 280, 404, 505, 691, 707, 808, 1010, 1382, 1414, 2020, 2764, 2828, 3455, 3535, 4040, 4837, 5528, 5656, 6910, 7070, 9674, 13820, 14140, 19348, 24185, 27640, 28280, 38696, 48370, 69791, 96740, 139582, 193480, 279164, 348955, 488537, 558328, 697910, 977074, 1395820, 1954148, 2442685, 2791640, 3908296, 4885370, 9770740, 19541480]

約数ペア:

[(1, 19541480), (2, 9770740), (4, 4885370), (5, 3908296), (7, 2791640), (8, 2442685), (10, 1954148), (14, 1395820), (20, 977074), (28, 697910), (35, 558328), (40, 488537), (56, 348955), (70, 279164), (101, 193480), (140, 139582), (202, 96740), (280, 69791), (404, 48370), (505, 38696), (691, 28280), (707, 27640), (808, 24185), (1010, 19348), (1382, 14140), (1414, 13820), (2020, 9674), (2764, 7070), (2828, 6910), (3455, 5656), (3535, 5528), (4040, 4837)]