21739784

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{23}}^2\times {\mathrm{467}}^1$

素因数の和:530

約数の個数: 48

約数和(自身を含む): 46584720

約数和(自身を除く): 24844936

約数列:

[1, 2, 4, 8, 11, 22, 23, 44, 46, 88, 92, 184, 253, 467, 506, 529, 934, 1012, 1058, 1868, 2024, 2116, 3736, 4232, 5137, 5819, 10274, 10741, 11638, 20548, 21482, 23276, 41096, 42964, 46552, 85928, 118151, 236302, 247043, 472604, 494086, 945208, 988172, 1976344, 2717473, 5434946, 10869892, 21739784]

約数ペア:

[(1, 21739784), (2, 10869892), (4, 5434946), (8, 2717473), (11, 1976344), (22, 988172), (23, 945208), (44, 494086), (46, 472604), (88, 247043), (92, 236302), (184, 118151), (253, 85928), (467, 46552), (506, 42964), (529, 41096), (934, 23276), (1012, 21482), (1058, 20548), (1868, 11638), (2024, 10741), (2116, 10274), (3736, 5819), (4232, 5137)]