157721905

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{887}}^1$

素因数の和:1017

約数の個数: 32

約数和(自身を含む): 214057728

約数和(自身を除く): 56335823

約数列:

[1, 5, 11, 53, 55, 61, 265, 305, 583, 671, 887, 2915, 3233, 3355, 4435, 9757, 16165, 35563, 47011, 48785, 54107, 177815, 235055, 270535, 517121, 595177, 2585605, 2867671, 2975885, 14338355, 31544381, 157721905]

約数ペア:

[(1, 157721905), (5, 31544381), (11, 14338355), (53, 2975885), (55, 2867671), (61, 2585605), (265, 595177), (305, 517121), (583, 270535), (671, 235055), (887, 177815), (2915, 54107), (3233, 48785), (3355, 47011), (4435, 35563), (9757, 16165)]