990199

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{157}}^1$

素因数の和:234

約数の個数: 16

約数和(自身を含む): 1228608

約数和(自身を除く): 238409

約数列:

[1, 7, 17, 53, 119, 157, 371, 901, 1099, 2669, 6307, 8321, 18683, 58247, 141457, 990199]

約数ペア:

[(1, 990199), (7, 141457), (17, 58247), (53, 18683), (119, 8321), (157, 6307), (371, 2669), (901, 1099)]