20384245

素因数分解:

$5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{151}}^1$

素因数の和:218

約数の個数: 48

約数和(自身を含む): 31190400

約数和(自身を除く): 10806155

約数列:

[1, 5, 7, 19, 29, 35, 49, 95, 133, 145, 151, 203, 245, 551, 665, 755, 931, 1015, 1057, 1421, 2755, 2869, 3857, 4379, 4655, 5285, 7105, 7399, 14345, 19285, 20083, 21895, 26999, 30653, 36995, 83201, 100415, 134995, 140581, 153265, 214571, 416005, 582407, 702905, 1072855, 2912035, 4076849, 20384245]

約数ペア:

[(1, 20384245), (5, 4076849), (7, 2912035), (19, 1072855), (29, 702905), (35, 582407), (49, 416005), (95, 214571), (133, 153265), (145, 140581), (151, 134995), (203, 100415), (245, 83201), (551, 36995), (665, 30653), (755, 26999), (931, 21895), (1015, 20083), (1057, 19285), (1421, 14345), (2755, 7399), (2869, 7105), (3857, 5285), (4379, 4655)]