19998678

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{1319}}^1$

素因数の和:1369

約数の個数: 48

約数和(自身を含む): 48280320

約数和(自身を除く): 28281642

約数列:

[1, 2, 3, 6, 7, 14, 19, 21, 38, 42, 57, 114, 133, 266, 361, 399, 722, 798, 1083, 1319, 2166, 2527, 2638, 3957, 5054, 7581, 7914, 9233, 15162, 18466, 25061, 27699, 50122, 55398, 75183, 150366, 175427, 350854, 476159, 526281, 952318, 1052562, 1428477, 2856954, 3333113, 6666226, 9999339, 19998678]

約数ペア:

[(1, 19998678), (2, 9999339), (3, 6666226), (6, 3333113), (7, 2856954), (14, 1428477), (19, 1052562), (21, 952318), (38, 526281), (42, 476159), (57, 350854), (114, 175427), (133, 150366), (266, 75183), (361, 55398), (399, 50122), (722, 27699), (798, 25061), (1083, 18466), (1319, 15162), (2166, 9233), (2527, 7914), (2638, 7581), (3957, 5054)]