28725424

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{181}}^1$

素因数の和:318

約数の個数: 80

約数和(自身を含む): 69509440

約数和(自身を除く): 40784016

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 109, 112, 181, 182, 208, 218, 362, 364, 436, 724, 728, 763, 872, 1267, 1417, 1448, 1456, 1526, 1744, 2353, 2534, 2834, 2896, 3052, 4706, 5068, 5668, 6104, 9412, 9919, 10136, 11336, 12208, 16471, 18824, 19729, 19838, 20272, 22672, 32942, 37648, 39458, 39676, 65884, 78916, 79352, 131768, 138103, 157832, 158704, 256477, 263536, 276206, 315664, 512954, 552412, 1025908, 1104824, 1795339, 2051816, 2209648, 3590678, 4103632, 7181356, 14362712, 28725424]

約数ペア:

[(1, 28725424), (2, 14362712), (4, 7181356), (7, 4103632), (8, 3590678), (13, 2209648), (14, 2051816), (16, 1795339), (26, 1104824), (28, 1025908), (52, 552412), (56, 512954), (91, 315664), (104, 276206), (109, 263536), (112, 256477), (181, 158704), (182, 157832), (208, 138103), (218, 131768), (362, 79352), (364, 78916), (436, 65884), (724, 39676), (728, 39458), (763, 37648), (872, 32942), (1267, 22672), (1417, 20272), (1448, 19838), (1456, 19729), (1526, 18824), (1744, 16471), (2353, 12208), (2534, 11336), (2834, 10136), (2896, 9919), (3052, 9412), (4706, 6104), (5068, 5668)]