20664488

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{163}}^1$

素因数の和:258

約数の個数: 64

約数和(自身を含む): 44634240

約数和(自身を除く): 23969752

約数列:

[1, 2, 4, 8, 13, 23, 26, 46, 52, 53, 92, 104, 106, 163, 184, 212, 299, 326, 424, 598, 652, 689, 1196, 1219, 1304, 1378, 2119, 2392, 2438, 2756, 3749, 4238, 4876, 5512, 7498, 8476, 8639, 9752, 14996, 15847, 16952, 17278, 29992, 31694, 34556, 48737, 63388, 69112, 97474, 112307, 126776, 194948, 198697, 224614, 389896, 397394, 449228, 794788, 898456, 1589576, 2583061, 5166122, 10332244, 20664488]

約数ペア:

[(1, 20664488), (2, 10332244), (4, 5166122), (8, 2583061), (13, 1589576), (23, 898456), (26, 794788), (46, 449228), (52, 397394), (53, 389896), (92, 224614), (104, 198697), (106, 194948), (163, 126776), (184, 112307), (212, 97474), (299, 69112), (326, 63388), (424, 48737), (598, 34556), (652, 31694), (689, 29992), (1196, 17278), (1219, 16952), (1304, 15847), (1378, 14996), (2119, 9752), (2392, 8639), (2438, 8476), (2756, 7498), (3749, 5512), (4238, 4876)]