21264650

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^2$

素因数の和:128

約数の個数: 72

約数和(自身を含む): 46148832

約数和(自身を除く): 24884182

約数列:

[1, 2, 5, 10, 11, 22, 23, 25, 41, 46, 50, 55, 82, 110, 115, 205, 230, 253, 275, 410, 451, 506, 550, 575, 902, 943, 1025, 1150, 1265, 1681, 1886, 2050, 2255, 2530, 3362, 4510, 4715, 6325, 8405, 9430, 10373, 11275, 12650, 16810, 18491, 20746, 22550, 23575, 36982, 38663, 42025, 47150, 51865, 77326, 84050, 92455, 103730, 184910, 193315, 259325, 386630, 425293, 462275, 518650, 850586, 924550, 966575, 1933150, 2126465, 4252930, 10632325, 21264650]

約数ペア:

[(1, 21264650), (2, 10632325), (5, 4252930), (10, 2126465), (11, 1933150), (22, 966575), (23, 924550), (25, 850586), (41, 518650), (46, 462275), (50, 425293), (55, 386630), (82, 259325), (110, 193315), (115, 184910), (205, 103730), (230, 92455), (253, 84050), (275, 77326), (410, 51865), (451, 47150), (506, 42025), (550, 38663), (575, 36982), (902, 23575), (943, 22550), (1025, 20746), (1150, 18491), (1265, 16810), (1681, 12650), (1886, 11275), (2050, 10373), (2255, 9430), (2530, 8405), (3362, 6325), (4510, 4715)]