19643888

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{239}}^1\times {\mathrm{467}}^1$

素因数の和:725

約数の個数: 40

約数和(自身を含む): 41783040

約数和(自身を除く): 22139152

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 239, 467, 478, 934, 956, 1868, 1912, 2629, 3736, 3824, 5137, 5258, 7472, 10274, 10516, 20548, 21032, 41096, 42064, 82192, 111613, 223226, 446452, 892904, 1227743, 1785808, 2455486, 4910972, 9821944, 19643888]

約数ペア:

[(1, 19643888), (2, 9821944), (4, 4910972), (8, 2455486), (11, 1785808), (16, 1227743), (22, 892904), (44, 446452), (88, 223226), (176, 111613), (239, 82192), (467, 42064), (478, 41096), (934, 21032), (956, 20548), (1868, 10516), (1912, 10274), (2629, 7472), (3736, 5258), (3824, 5137)]