199945420

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{149213}}^1$

素因数の和:149289

約数の個数: 24

約数和(自身を含む): 426155184

約数和(自身を除く): 226209764

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 670, 1340, 149213, 298426, 596852, 746065, 1492130, 2984260, 9997271, 19994542, 39989084, 49986355, 99972710, 199945420]

約数ペア:

[(1, 199945420), (2, 99972710), (4, 49986355), (5, 39989084), (10, 19994542), (20, 9997271), (67, 2984260), (134, 1492130), (268, 746065), (335, 596852), (670, 298426), (1340, 149213)]