19840768

素因数分解:

$2^8\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{97}}^1$

素因数の和:177

約数の個数: 72

約数和(自身を含む): 43267392

約数和(自身を除く): 23426624

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 47, 64, 68, 94, 97, 128, 136, 188, 194, 256, 272, 376, 388, 544, 752, 776, 799, 1088, 1504, 1552, 1598, 1649, 2176, 3008, 3104, 3196, 3298, 4352, 4559, 6016, 6208, 6392, 6596, 9118, 12032, 12416, 12784, 13192, 18236, 24832, 25568, 26384, 36472, 51136, 52768, 72944, 77503, 102272, 105536, 145888, 155006, 204544, 211072, 291776, 310012, 422144, 583552, 620024, 1167104, 1240048, 2480096, 4960192, 9920384, 19840768]

約数ペア:

[(1, 19840768), (2, 9920384), (4, 4960192), (8, 2480096), (16, 1240048), (17, 1167104), (32, 620024), (34, 583552), (47, 422144), (64, 310012), (68, 291776), (94, 211072), (97, 204544), (128, 155006), (136, 145888), (188, 105536), (194, 102272), (256, 77503), (272, 72944), (376, 52768), (388, 51136), (544, 36472), (752, 26384), (776, 25568), (799, 24832), (1088, 18236), (1504, 13192), (1552, 12784), (1598, 12416), (1649, 12032), (2176, 9118), (3008, 6596), (3104, 6392), (3196, 6208), (3298, 6016), (4352, 4559)]