399320

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{149}}^1$

素因数の和:227

約数の個数: 32

約数和(自身を含む): 918000

約数和(自身を除く): 518680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 134, 149, 268, 298, 335, 536, 596, 670, 745, 1192, 1340, 1490, 2680, 2980, 5960, 9983, 19966, 39932, 49915, 79864, 99830, 199660, 399320]

約数ペア:

[(1, 399320), (2, 199660), (4, 99830), (5, 79864), (8, 49915), (10, 39932), (20, 19966), (40, 9983), (67, 5960), (134, 2980), (149, 2680), (268, 1490), (298, 1340), (335, 1192), (536, 745), (596, 670)]