21511336

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{743}}^1$

素因数の和:814

約数の個数: 64

約数和(自身を含む): 51425280

約数和(自身を除く): 29913944

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 47, 56, 77, 88, 94, 154, 188, 308, 329, 376, 517, 616, 658, 743, 1034, 1316, 1486, 2068, 2632, 2972, 3619, 4136, 5201, 5944, 7238, 8173, 10402, 14476, 16346, 20804, 28952, 32692, 34921, 41608, 57211, 65384, 69842, 114422, 139684, 228844, 244447, 279368, 384131, 457688, 488894, 768262, 977788, 1536524, 1955576, 2688917, 3073048, 5377834, 10755668, 21511336]

約数ペア:

[(1, 21511336), (2, 10755668), (4, 5377834), (7, 3073048), (8, 2688917), (11, 1955576), (14, 1536524), (22, 977788), (28, 768262), (44, 488894), (47, 457688), (56, 384131), (77, 279368), (88, 244447), (94, 228844), (154, 139684), (188, 114422), (308, 69842), (329, 65384), (376, 57211), (517, 41608), (616, 34921), (658, 32692), (743, 28952), (1034, 20804), (1316, 16346), (1486, 14476), (2068, 10402), (2632, 8173), (2972, 7238), (3619, 5944), (4136, 5201)]