39999280

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{6329}}^1$

素因数の和:6421

約数の個数: 40

約数和(自身を含む): 94190400

約数和(自身を除く): 54191120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 632, 790, 1264, 1580, 3160, 6320, 6329, 12658, 25316, 31645, 50632, 63290, 101264, 126580, 253160, 499991, 506320, 999982, 1999964, 2499955, 3999928, 4999910, 7999856, 9999820, 19999640, 39999280]

約数ペア:

[(1, 39999280), (2, 19999640), (4, 9999820), (5, 7999856), (8, 4999910), (10, 3999928), (16, 2499955), (20, 1999964), (40, 999982), (79, 506320), (80, 499991), (158, 253160), (316, 126580), (395, 101264), (632, 63290), (790, 50632), (1264, 31645), (1580, 25316), (3160, 12658), (6320, 6329)]