81991791718

素因数分解:

$2^1\times {\mathrm{41}}^1\times {\mathrm{101}}^1\times {\mathrm{9899999}}^1$

素因数の和:9900143

約数の個数: 16

約数和(自身を含む): 127234800000

約数和(自身を除く): 45243008282

約数列:

[1, 2, 41, 82, 101, 202, 4141, 8282, 9899999, 19799998, 405899959, 811799918, 999899899, 1999799798, 40995895859, 81991791718]

約数ペア:

[(1, 81991791718), (2, 40995895859), (41, 1999799798), (82, 999899899), (101, 811799918), (202, 405899959), (4141, 19799998), (8282, 9899999)]