28781792

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1609}}^1$

素因数の和:1675

約数の個数: 48

約数和(自身を含む): 62480880

約数和(自身を除く): 33699088

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 43, 52, 86, 104, 172, 208, 344, 416, 559, 688, 1118, 1376, 1609, 2236, 3218, 4472, 6436, 8944, 12872, 17888, 20917, 25744, 41834, 51488, 69187, 83668, 138374, 167336, 276748, 334672, 553496, 669344, 899431, 1106992, 1798862, 2213984, 3597724, 7195448, 14390896, 28781792]

約数ペア:

[(1, 28781792), (2, 14390896), (4, 7195448), (8, 3597724), (13, 2213984), (16, 1798862), (26, 1106992), (32, 899431), (43, 669344), (52, 553496), (86, 334672), (104, 276748), (172, 167336), (208, 138374), (344, 83668), (416, 69187), (559, 51488), (688, 41834), (1118, 25744), (1376, 20917), (1609, 17888), (2236, 12872), (3218, 8944), (4472, 6436)]