13820000

素因数分解:

$2^5\times 5^4\times {\mathrm{691}}^1$

素因数の和:721

約数の個数: 60

約数和(自身を含む): 34048476

約数和(自身を除く): 20228476

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 625, 691, 800, 1000, 1250, 1382, 2000, 2500, 2764, 3455, 4000, 5000, 5528, 6910, 10000, 11056, 13820, 17275, 20000, 22112, 27640, 34550, 55280, 69100, 86375, 110560, 138200, 172750, 276400, 345500, 431875, 552800, 691000, 863750, 1382000, 1727500, 2764000, 3455000, 6910000, 13820000]

約数ペア:

[(1, 13820000), (2, 6910000), (4, 3455000), (5, 2764000), (8, 1727500), (10, 1382000), (16, 863750), (20, 691000), (25, 552800), (32, 431875), (40, 345500), (50, 276400), (80, 172750), (100, 138200), (125, 110560), (160, 86375), (200, 69100), (250, 55280), (400, 34550), (500, 27640), (625, 22112), (691, 20000), (800, 17275), (1000, 13820), (1250, 11056), (1382, 10000), (2000, 6910), (2500, 5528), (2764, 5000), (3455, 4000)]