81978650

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{4349}}^1$

素因数の和:4403

約数の個数: 48

約数和(自身を含む): 169911000

約数和(自身を除く): 87932350

約数列:

[1, 2, 5, 10, 13, 25, 26, 29, 50, 58, 65, 130, 145, 290, 325, 377, 650, 725, 754, 1450, 1885, 3770, 4349, 8698, 9425, 18850, 21745, 43490, 56537, 108725, 113074, 126121, 217450, 252242, 282685, 565370, 630605, 1261210, 1413425, 1639573, 2826850, 3153025, 3279146, 6306050, 8197865, 16395730, 40989325, 81978650]

約数ペア:

[(1, 81978650), (2, 40989325), (5, 16395730), (10, 8197865), (13, 6306050), (25, 3279146), (26, 3153025), (29, 2826850), (50, 1639573), (58, 1413425), (65, 1261210), (130, 630605), (145, 565370), (290, 282685), (325, 252242), (377, 217450), (650, 126121), (725, 113074), (754, 108725), (1450, 56537), (1885, 43490), (3770, 21745), (4349, 18850), (8698, 9425)]