19309745

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^2$

素因数の和:130

約数の個数: 48

約数和(自身を含む): 30256128

約数和(自身を除く): 10946383

約数列:

[1, 5, 7, 13, 31, 35, 37, 65, 91, 155, 185, 217, 259, 403, 455, 481, 1085, 1147, 1295, 1369, 2015, 2405, 2821, 3367, 5735, 6845, 8029, 9583, 14105, 14911, 16835, 17797, 40145, 42439, 47915, 74555, 88985, 104377, 124579, 212195, 297073, 521885, 551707, 622895, 1485365, 2758535, 3861949, 19309745]

約数ペア:

[(1, 19309745), (5, 3861949), (7, 2758535), (13, 1485365), (31, 622895), (35, 551707), (37, 521885), (65, 297073), (91, 212195), (155, 124579), (185, 104377), (217, 88985), (259, 74555), (403, 47915), (455, 42439), (481, 40145), (1085, 17797), (1147, 16835), (1295, 14911), (1369, 14105), (2015, 9583), (2405, 8029), (2821, 6845), (3367, 5735)]