21377104

素因数分解:

$2^4\times 7^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{131}}^1$

素因数の和:224

約数の個数: 80

約数和(自身を含む): 50282496

約数和(自身を除く): 28905392

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 31, 47, 56, 62, 94, 112, 124, 131, 188, 217, 248, 262, 329, 376, 434, 496, 524, 658, 752, 868, 917, 1048, 1316, 1457, 1736, 1834, 2096, 2632, 2914, 3472, 3668, 4061, 5264, 5828, 6157, 7336, 8122, 10199, 11656, 12314, 14672, 16244, 20398, 23312, 24628, 28427, 32488, 40796, 43099, 49256, 56854, 64976, 81592, 86198, 98512, 113708, 163184, 172396, 190867, 227416, 344792, 381734, 454832, 689584, 763468, 1336069, 1526936, 2672138, 3053872, 5344276, 10688552, 21377104]

約数ペア:

[(1, 21377104), (2, 10688552), (4, 5344276), (7, 3053872), (8, 2672138), (14, 1526936), (16, 1336069), (28, 763468), (31, 689584), (47, 454832), (56, 381734), (62, 344792), (94, 227416), (112, 190867), (124, 172396), (131, 163184), (188, 113708), (217, 98512), (248, 86198), (262, 81592), (329, 64976), (376, 56854), (434, 49256), (496, 43099), (524, 40796), (658, 32488), (752, 28427), (868, 24628), (917, 23312), (1048, 20398), (1316, 16244), (1457, 14672), (1736, 12314), (1834, 11656), (2096, 10199), (2632, 8122), (2914, 7336), (3472, 6157), (3668, 5828), (4061, 5264)]