28820855

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{263}}^1$

素因数の和:407

約数の個数: 32

約数和(自身を含む): 41361408

約数和(自身を除く): 12540553

約数列:

[1, 5, 7, 31, 35, 101, 155, 217, 263, 505, 707, 1085, 1315, 1841, 3131, 3535, 8153, 9205, 15655, 21917, 26563, 40765, 57071, 109585, 132815, 185941, 285355, 823453, 929705, 4117265, 5764171, 28820855]

約数ペア:

[(1, 28820855), (5, 5764171), (7, 4117265), (31, 929705), (35, 823453), (101, 285355), (155, 185941), (217, 132815), (263, 109585), (505, 57071), (707, 40765), (1085, 26563), (1315, 21917), (1841, 15655), (3131, 9205), (3535, 8153)]