181257320

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{63823}}^1$

素因数の和:63905

約数の個数: 32

約数和(自身を含む): 413579520

約数和(自身を除く): 232322200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 63823, 127646, 255292, 319115, 510584, 638230, 1276460, 2552920, 4531433, 9062866, 18125732, 22657165, 36251464, 45314330, 90628660, 181257320]

約数ペア:

[(1, 181257320), (2, 90628660), (4, 45314330), (5, 36251464), (8, 22657165), (10, 18125732), (20, 9062866), (40, 4531433), (71, 2552920), (142, 1276460), (284, 638230), (355, 510584), (568, 319115), (710, 255292), (1420, 127646), (2840, 63823)]