28938640

素因数分解:

$2^4\times 5^1\times {\mathrm{67}}^1\times {\mathrm{5399}}^1$

素因数の和:5479

約数の個数: 40

約数和(自身を含む): 68299200

約数和(自身を除く): 39360560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 67, 80, 134, 268, 335, 536, 670, 1072, 1340, 2680, 5360, 5399, 10798, 21596, 26995, 43192, 53990, 86384, 107980, 215960, 361733, 431920, 723466, 1446932, 1808665, 2893864, 3617330, 5787728, 7234660, 14469320, 28938640]

約数ペア:

[(1, 28938640), (2, 14469320), (4, 7234660), (5, 5787728), (8, 3617330), (10, 2893864), (16, 1808665), (20, 1446932), (40, 723466), (67, 431920), (80, 361733), (134, 215960), (268, 107980), (335, 86384), (536, 53990), (670, 43192), (1072, 26995), (1340, 21596), (2680, 10798), (5360, 5399)]