20187265

素因数分解:

$5^1\times 7^3\times {\mathrm{79}}^1\times {\mathrm{149}}^1$

素因数の和:254

約数の個数: 32

約数和(自身を含む): 28800000

約数和(自身を除く): 8612735

約数列:

[1, 5, 7, 35, 49, 79, 149, 245, 343, 395, 553, 745, 1043, 1715, 2765, 3871, 5215, 7301, 11771, 19355, 27097, 36505, 51107, 58855, 82397, 135485, 255535, 411985, 576779, 2883895, 4037453, 20187265]

約数ペア:

[(1, 20187265), (5, 4037453), (7, 2883895), (35, 576779), (49, 411985), (79, 255535), (149, 135485), (245, 82397), (343, 58855), (395, 51107), (553, 36505), (745, 27097), (1043, 19355), (1715, 11771), (2765, 7301), (3871, 5215)]