199365080

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{81707}}^1$

素因数の和:81779

約数の個数: 32

約数和(自身を含む): 455930640

約数和(自身を除く): 256565560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 81707, 163414, 326828, 408535, 653656, 817070, 1634140, 3268280, 4984127, 9968254, 19936508, 24920635, 39873016, 49841270, 99682540, 199365080]

約数ペア:

[(1, 199365080), (2, 99682540), (4, 49841270), (5, 39873016), (8, 24920635), (10, 19936508), (20, 9968254), (40, 4984127), (61, 3268280), (122, 1634140), (244, 817070), (305, 653656), (488, 408535), (610, 326828), (1220, 163414), (2440, 81707)]