19493500

素因数分解:

$2^2\times 5^3\times {\mathrm{13}}^1\times {\mathrm{2999}}^1$

素因数の和:3031

約数の個数: 48

約数和(自身を含む): 45864000

約数和(自身を除く): 26370500

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 125, 130, 250, 260, 325, 500, 650, 1300, 1625, 2999, 3250, 5998, 6500, 11996, 14995, 29990, 38987, 59980, 74975, 77974, 149950, 155948, 194935, 299900, 374875, 389870, 749750, 779740, 974675, 1499500, 1949350, 3898700, 4873375, 9746750, 19493500]

約数ペア:

[(1, 19493500), (2, 9746750), (4, 4873375), (5, 3898700), (10, 1949350), (13, 1499500), (20, 974675), (25, 779740), (26, 749750), (50, 389870), (52, 374875), (65, 299900), (100, 194935), (125, 155948), (130, 149950), (250, 77974), (260, 74975), (325, 59980), (500, 38987), (650, 29990), (1300, 14995), (1625, 11996), (2999, 6500), (3250, 5998)]