28990115

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{347}}^1$

素因数の和:408

約数の個数: 48

約数和(自身を含む): 45702144

約数和(自身を除く): 16712029

約数列:

[1, 5, 7, 11, 31, 35, 49, 55, 77, 155, 217, 245, 341, 347, 385, 539, 1085, 1519, 1705, 1735, 2387, 2429, 2695, 3817, 7595, 10757, 11935, 12145, 16709, 17003, 19085, 26719, 53785, 75299, 83545, 85015, 118327, 133595, 187033, 376495, 527093, 591635, 828289, 935165, 2635465, 4141445, 5798023, 28990115]

約数ペア:

[(1, 28990115), (5, 5798023), (7, 4141445), (11, 2635465), (31, 935165), (35, 828289), (49, 591635), (55, 527093), (77, 376495), (155, 187033), (217, 133595), (245, 118327), (341, 85015), (347, 83545), (385, 75299), (539, 53785), (1085, 26719), (1519, 19085), (1705, 17003), (1735, 16709), (2387, 12145), (2429, 11935), (2695, 10757), (3817, 7595)]