20874861

素因数分解:

$3^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{89}}^1$

素因数の和:195

約数の個数: 64

約数和(自身を含む): 38361600

約数和(自身を除く): 17486739

約数列:

[1, 3, 7, 9, 17, 21, 27, 51, 63, 73, 89, 119, 153, 189, 219, 267, 357, 459, 511, 623, 657, 801, 1071, 1241, 1513, 1533, 1869, 1971, 2403, 3213, 3723, 4539, 4599, 5607, 6497, 8687, 10591, 11169, 13617, 13797, 16821, 19491, 26061, 31773, 33507, 40851, 45479, 58473, 78183, 95319, 110449, 136437, 175419, 234549, 285957, 331347, 409311, 773143, 994041, 1227933, 2319429, 2982123, 6958287, 20874861]

約数ペア:

[(1, 20874861), (3, 6958287), (7, 2982123), (9, 2319429), (17, 1227933), (21, 994041), (27, 773143), (51, 409311), (63, 331347), (73, 285957), (89, 234549), (119, 175419), (153, 136437), (189, 110449), (219, 95319), (267, 78183), (357, 58473), (459, 45479), (511, 40851), (623, 33507), (657, 31773), (801, 26061), (1071, 19491), (1241, 16821), (1513, 13797), (1533, 13617), (1869, 11169), (1971, 10591), (2403, 8687), (3213, 6497), (3723, 5607), (4539, 4599)]