18997930

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{2137}}^1$

素因数の和:2278

約数の個数: 32

約数和(自身を含む): 39407616

約数和(自身を除く): 20409686

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 127, 254, 635, 889, 1270, 1778, 2137, 4274, 4445, 8890, 10685, 14959, 21370, 29918, 74795, 149590, 271399, 542798, 1356995, 1899793, 2713990, 3799586, 9498965, 18997930]

約数ペア:

[(1, 18997930), (2, 9498965), (5, 3799586), (7, 2713990), (10, 1899793), (14, 1356995), (35, 542798), (70, 271399), (127, 149590), (254, 74795), (635, 29918), (889, 21370), (1270, 14959), (1778, 10685), (2137, 8890), (4274, 4445)]