21041208

素因数分解:

$2^3\times 3^4\times {\mathrm{19}}^1\times {\mathrm{1709}}^1$

素因数の和:1746

約数の個数: 80

約数和(自身を含む): 62073000

約数和(自身を除く): 41031792

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 19, 24, 27, 36, 38, 54, 57, 72, 76, 81, 108, 114, 152, 162, 171, 216, 228, 324, 342, 456, 513, 648, 684, 1026, 1368, 1539, 1709, 2052, 3078, 3418, 4104, 5127, 6156, 6836, 10254, 12312, 13672, 15381, 20508, 30762, 32471, 41016, 46143, 61524, 64942, 92286, 97413, 123048, 129884, 138429, 184572, 194826, 259768, 276858, 292239, 369144, 389652, 553716, 584478, 779304, 876717, 1107432, 1168956, 1753434, 2337912, 2630151, 3506868, 5260302, 7013736, 10520604, 21041208]

約数ペア:

[(1, 21041208), (2, 10520604), (3, 7013736), (4, 5260302), (6, 3506868), (8, 2630151), (9, 2337912), (12, 1753434), (18, 1168956), (19, 1107432), (24, 876717), (27, 779304), (36, 584478), (38, 553716), (54, 389652), (57, 369144), (72, 292239), (76, 276858), (81, 259768), (108, 194826), (114, 184572), (152, 138429), (162, 129884), (171, 123048), (216, 97413), (228, 92286), (324, 64942), (342, 61524), (456, 46143), (513, 41016), (648, 32471), (684, 30762), (1026, 20508), (1368, 15381), (1539, 13672), (1709, 12312), (2052, 10254), (3078, 6836), (3418, 6156), (4104, 5127)]