28281605

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{283}}^1$

素因数の和:401

約数の個数: 32

約数和(自身を含む): 39260160

約数和(自身を除く): 10978555

約数列:

[1, 5, 11, 23, 55, 79, 115, 253, 283, 395, 869, 1265, 1415, 1817, 3113, 4345, 6509, 9085, 15565, 19987, 22357, 32545, 71599, 99935, 111785, 245927, 357995, 514211, 1229635, 2571055, 5656321, 28281605]

約数ペア:

[(1, 28281605), (5, 5656321), (11, 2571055), (23, 1229635), (55, 514211), (79, 357995), (115, 245927), (253, 111785), (283, 99935), (395, 71599), (869, 32545), (1265, 22357), (1415, 19987), (1817, 15565), (3113, 9085), (4345, 6509)]