28665520

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{641}}^1$

素因数の和:710

約数の個数: 80

約数和(自身を含む): 73557792

約数和(自身を除く): 44892272

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 43, 52, 65, 80, 86, 104, 130, 172, 208, 215, 260, 344, 430, 520, 559, 641, 688, 860, 1040, 1118, 1282, 1720, 2236, 2564, 2795, 3205, 3440, 4472, 5128, 5590, 6410, 8333, 8944, 10256, 11180, 12820, 16666, 22360, 25640, 27563, 33332, 41665, 44720, 51280, 55126, 66664, 83330, 110252, 133328, 137815, 166660, 220504, 275630, 333320, 358319, 441008, 551260, 666640, 716638, 1102520, 1433276, 1791595, 2205040, 2866552, 3583190, 5733104, 7166380, 14332760, 28665520]

約数ペア:

[(1, 28665520), (2, 14332760), (4, 7166380), (5, 5733104), (8, 3583190), (10, 2866552), (13, 2205040), (16, 1791595), (20, 1433276), (26, 1102520), (40, 716638), (43, 666640), (52, 551260), (65, 441008), (80, 358319), (86, 333320), (104, 275630), (130, 220504), (172, 166660), (208, 137815), (215, 133328), (260, 110252), (344, 83330), (430, 66664), (520, 55126), (559, 51280), (641, 44720), (688, 41665), (860, 33332), (1040, 27563), (1118, 25640), (1282, 22360), (1720, 16666), (2236, 12820), (2564, 11180), (2795, 10256), (3205, 8944), (3440, 8333), (4472, 6410), (5128, 5590)]