199903970

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{977}}^1$

素因数の和:1107

約数の個数: 64

約数和(自身を含む): 428129280

約数和(自身を除く): 228225310

約数列:

[1, 2, 5, 7, 10, 14, 35, 37, 70, 74, 79, 158, 185, 259, 370, 395, 518, 553, 790, 977, 1106, 1295, 1954, 2590, 2765, 2923, 4885, 5530, 5846, 6839, 9770, 13678, 14615, 20461, 29230, 34195, 36149, 40922, 68390, 72298, 77183, 102305, 154366, 180745, 204610, 253043, 361490, 385915, 506086, 540281, 771830, 1080562, 1265215, 2530430, 2701405, 2855771, 5402810, 5711542, 14278855, 19990397, 28557710, 39980794, 99951985, 199903970]

約数ペア:

[(1, 199903970), (2, 99951985), (5, 39980794), (7, 28557710), (10, 19990397), (14, 14278855), (35, 5711542), (37, 5402810), (70, 2855771), (74, 2701405), (79, 2530430), (158, 1265215), (185, 1080562), (259, 771830), (370, 540281), (395, 506086), (518, 385915), (553, 361490), (790, 253043), (977, 204610), (1106, 180745), (1295, 154366), (1954, 102305), (2590, 77183), (2765, 72298), (2923, 68390), (4885, 40922), (5530, 36149), (5846, 34195), (6839, 29230), (9770, 20461), (13678, 14615)]