20705200

素因数分解:

$2^4\times 5^2\times {\mathrm{37}}^1\times {\mathrm{1399}}^1$

素因数の和:1454

約数の個数: 60

約数和(自身を含む): 51125200

約数和(自身を除く): 30420000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 37, 40, 50, 74, 80, 100, 148, 185, 200, 296, 370, 400, 592, 740, 925, 1399, 1480, 1850, 2798, 2960, 3700, 5596, 6995, 7400, 11192, 13990, 14800, 22384, 27980, 34975, 51763, 55960, 69950, 103526, 111920, 139900, 207052, 258815, 279800, 414104, 517630, 559600, 828208, 1035260, 1294075, 2070520, 2588150, 4141040, 5176300, 10352600, 20705200]

約数ペア:

[(1, 20705200), (2, 10352600), (4, 5176300), (5, 4141040), (8, 2588150), (10, 2070520), (16, 1294075), (20, 1035260), (25, 828208), (37, 559600), (40, 517630), (50, 414104), (74, 279800), (80, 258815), (100, 207052), (148, 139900), (185, 111920), (200, 103526), (296, 69950), (370, 55960), (400, 51763), (592, 34975), (740, 27980), (925, 22384), (1399, 14800), (1480, 13990), (1850, 11192), (2798, 7400), (2960, 6995), (3700, 5596)]