28905760

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^2\times {\mathrm{1069}}^1$

素因数の和:1110

約数の個数: 72

約数和(自身を含む): 74016180

約数和(自身を除く): 45110420

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 169, 208, 260, 338, 416, 520, 676, 845, 1040, 1069, 1352, 1690, 2080, 2138, 2704, 3380, 4276, 5345, 5408, 6760, 8552, 10690, 13520, 13897, 17104, 21380, 27040, 27794, 34208, 42760, 55588, 69485, 85520, 111176, 138970, 171040, 180661, 222352, 277940, 361322, 444704, 555880, 722644, 903305, 1111760, 1445288, 1806610, 2223520, 2890576, 3613220, 5781152, 7226440, 14452880, 28905760]

約数ペア:

[(1, 28905760), (2, 14452880), (4, 7226440), (5, 5781152), (8, 3613220), (10, 2890576), (13, 2223520), (16, 1806610), (20, 1445288), (26, 1111760), (32, 903305), (40, 722644), (52, 555880), (65, 444704), (80, 361322), (104, 277940), (130, 222352), (160, 180661), (169, 171040), (208, 138970), (260, 111176), (338, 85520), (416, 69485), (520, 55588), (676, 42760), (845, 34208), (1040, 27794), (1069, 27040), (1352, 21380), (1690, 17104), (2080, 13897), (2138, 13520), (2704, 10690), (3380, 8552), (4276, 6760), (5345, 5408)]