2980000

素因数分解:

$2^5\times 5^4\times {\mathrm{149}}^1$

素因数の和:179

約数の個数: 60

約数和(自身を含む): 7380450

約数和(自身を除く): 4400450

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 149, 160, 200, 250, 298, 400, 500, 596, 625, 745, 800, 1000, 1192, 1250, 1490, 2000, 2384, 2500, 2980, 3725, 4000, 4768, 5000, 5960, 7450, 10000, 11920, 14900, 18625, 20000, 23840, 29800, 37250, 59600, 74500, 93125, 119200, 149000, 186250, 298000, 372500, 596000, 745000, 1490000, 2980000]

約数ペア:

[(1, 2980000), (2, 1490000), (4, 745000), (5, 596000), (8, 372500), (10, 298000), (16, 186250), (20, 149000), (25, 119200), (32, 93125), (40, 74500), (50, 59600), (80, 37250), (100, 29800), (125, 23840), (149, 20000), (160, 18625), (200, 14900), (250, 11920), (298, 10000), (400, 7450), (500, 5960), (596, 5000), (625, 4768), (745, 4000), (800, 3725), (1000, 2980), (1192, 2500), (1250, 2384), (1490, 2000)]