128870540

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{19949}}^1$

素因数の和:19994

約数の個数: 48

約数和(自身を含む): 301644000

約数和(自身を除く): 172773460

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 34, 38, 68, 76, 85, 95, 170, 190, 323, 340, 380, 646, 1292, 1615, 3230, 6460, 19949, 39898, 79796, 99745, 199490, 339133, 379031, 398980, 678266, 758062, 1356532, 1516124, 1695665, 1895155, 3391330, 3790310, 6443527, 6782660, 7580620, 12887054, 25774108, 32217635, 64435270, 128870540]

約数ペア:

[(1, 128870540), (2, 64435270), (4, 32217635), (5, 25774108), (10, 12887054), (17, 7580620), (19, 6782660), (20, 6443527), (34, 3790310), (38, 3391330), (68, 1895155), (76, 1695665), (85, 1516124), (95, 1356532), (170, 758062), (190, 678266), (323, 398980), (340, 379031), (380, 339133), (646, 199490), (1292, 99745), (1615, 79796), (3230, 39898), (6460, 19949)]