209219990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{1249}}^1\times {\mathrm{2393}}^1$

素因数の和:3656

約数の個数: 32

約数和(自身を含む): 430920000

約数和(自身を除く): 221700010

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 1249, 2393, 2498, 4786, 6245, 8743, 11965, 12490, 16751, 17486, 23930, 33502, 43715, 83755, 87430, 167510, 2988857, 5977714, 14944285, 20921999, 29888570, 41843998, 104609995, 209219990]

約数ペア:

[(1, 209219990), (2, 104609995), (5, 41843998), (7, 29888570), (10, 20921999), (14, 14944285), (35, 5977714), (70, 2988857), (1249, 167510), (2393, 87430), (2498, 83755), (4786, 43715), (6245, 33502), (8743, 23930), (11965, 17486), (12490, 16751)]