27980000

素因数分解:

$2^5\times 5^4\times {\mathrm{1399}}^1$

素因数の和:1429

約数の個数: 60

約数和(自身を含む): 68884200

約数和(自身を除く): 40904200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 625, 800, 1000, 1250, 1399, 2000, 2500, 2798, 4000, 5000, 5596, 6995, 10000, 11192, 13990, 20000, 22384, 27980, 34975, 44768, 55960, 69950, 111920, 139900, 174875, 223840, 279800, 349750, 559600, 699500, 874375, 1119200, 1399000, 1748750, 2798000, 3497500, 5596000, 6995000, 13990000, 27980000]

約数ペア:

[(1, 27980000), (2, 13990000), (4, 6995000), (5, 5596000), (8, 3497500), (10, 2798000), (16, 1748750), (20, 1399000), (25, 1119200), (32, 874375), (40, 699500), (50, 559600), (80, 349750), (100, 279800), (125, 223840), (160, 174875), (200, 139900), (250, 111920), (400, 69950), (500, 55960), (625, 44768), (800, 34975), (1000, 27980), (1250, 22384), (1399, 20000), (2000, 13990), (2500, 11192), (2798, 10000), (4000, 6995), (5000, 5596)]