28016720

素因数分解:

$2^4\times 5^1\times {\mathrm{67}}^1\times {\mathrm{5227}}^1$

素因数の和:5307

約数の個数: 40

約数和(自身を含む): 66123744

約数和(自身を除く): 38107024

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 67, 80, 134, 268, 335, 536, 670, 1072, 1340, 2680, 5227, 5360, 10454, 20908, 26135, 41816, 52270, 83632, 104540, 209080, 350209, 418160, 700418, 1400836, 1751045, 2801672, 3502090, 5603344, 7004180, 14008360, 28016720]

約数ペア:

[(1, 28016720), (2, 14008360), (4, 7004180), (5, 5603344), (8, 3502090), (10, 2801672), (16, 1751045), (20, 1400836), (40, 700418), (67, 418160), (80, 350209), (134, 209080), (268, 104540), (335, 83632), (536, 52270), (670, 41816), (1072, 26135), (1340, 20908), (2680, 10454), (5227, 5360)]