81088120

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{20899}}^1$

素因数の和:21007

約数の個数: 32

約数和(自身を含む): 184338000

約数和(自身を除く): 103249880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 20899, 41798, 83596, 104495, 167192, 208990, 417980, 835960, 2027203, 4054406, 8108812, 10136015, 16217624, 20272030, 40544060, 81088120]

約数ペア:

[(1, 81088120), (2, 40544060), (4, 20272030), (5, 16217624), (8, 10136015), (10, 8108812), (20, 4054406), (40, 2027203), (97, 835960), (194, 417980), (388, 208990), (485, 167192), (776, 104495), (970, 83596), (1940, 41798), (3880, 20899)]