21489728

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1123}}^1$

素因数の和:1171

約数の個数: 56

約数和(自身を含む): 47963328

約数和(自身を除く): 26473600

約数列:

[1, 2, 4, 8, 13, 16, 23, 26, 32, 46, 52, 64, 92, 104, 184, 208, 299, 368, 416, 598, 736, 832, 1123, 1196, 1472, 2246, 2392, 4492, 4784, 8984, 9568, 14599, 17968, 19136, 25829, 29198, 35936, 51658, 58396, 71872, 103316, 116792, 206632, 233584, 335777, 413264, 467168, 671554, 826528, 934336, 1343108, 1653056, 2686216, 5372432, 10744864, 21489728]

約数ペア:

[(1, 21489728), (2, 10744864), (4, 5372432), (8, 2686216), (13, 1653056), (16, 1343108), (23, 934336), (26, 826528), (32, 671554), (46, 467168), (52, 413264), (64, 335777), (92, 233584), (104, 206632), (184, 116792), (208, 103316), (299, 71872), (368, 58396), (416, 51658), (598, 35936), (736, 29198), (832, 25829), (1123, 19136), (1196, 17968), (1472, 14599), (2246, 9568), (2392, 8984), (4492, 4784)]