20763855

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{2273}}^1$

素因数の和:2320

約数の個数: 48

約数和(自身を含む): 42569280

約数和(自身を除く): 21805425

約数列:

[1, 3, 5, 7, 9, 15, 21, 29, 35, 45, 63, 87, 105, 145, 203, 261, 315, 435, 609, 1015, 1305, 1827, 2273, 3045, 6819, 9135, 11365, 15911, 20457, 34095, 47733, 65917, 79555, 102285, 143199, 197751, 238665, 329585, 461419, 593253, 715995, 988755, 1384257, 2307095, 2966265, 4152771, 6921285, 20763855]

約数ペア:

[(1, 20763855), (3, 6921285), (5, 4152771), (7, 2966265), (9, 2307095), (15, 1384257), (21, 988755), (29, 715995), (35, 593253), (45, 461419), (63, 329585), (87, 238665), (105, 197751), (145, 143199), (203, 102285), (261, 79555), (315, 65917), (435, 47733), (609, 34095), (1015, 20457), (1305, 15911), (1827, 11365), (2273, 9135), (3045, 6819)]