79478980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{81101}}^1$

素因数の和:81124

約数の個数: 36

約数和(自身を含む): 194158188

約数和(自身を除く): 114679208

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 81101, 162202, 324404, 405505, 567707, 811010, 1135414, 1622020, 2270828, 2838535, 3973949, 5677070, 7947898, 11354140, 15895796, 19869745, 39739490, 79478980]

約数ペア:

[(1, 79478980), (2, 39739490), (4, 19869745), (5, 15895796), (7, 11354140), (10, 7947898), (14, 5677070), (20, 3973949), (28, 2838535), (35, 2270828), (49, 1622020), (70, 1135414), (98, 811010), (140, 567707), (196, 405505), (245, 324404), (490, 162202), (980, 81101)]