20805220780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{1783}}^1\times {\mathrm{30707}}^1$

素因数の和:32518

約数の個数: 48

約数和(自身を含む): 46017780480

約数和(自身を除く): 25212559700

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 1783, 3566, 7132, 8915, 17830, 30707, 33877, 35660, 61414, 67754, 122828, 135508, 153535, 169385, 307070, 338770, 583433, 614140, 677540, 1166866, 2333732, 2917165, 5834330, 11668660, 54750581, 109501162, 219002324, 273752905, 547505810, 1040261039, 1095011620, 2080522078, 4161044156, 5201305195, 10402610390, 20805220780]

約数ペア:

[(1, 20805220780), (2, 10402610390), (4, 5201305195), (5, 4161044156), (10, 2080522078), (19, 1095011620), (20, 1040261039), (38, 547505810), (76, 273752905), (95, 219002324), (190, 109501162), (380, 54750581), (1783, 11668660), (3566, 5834330), (7132, 2917165), (8915, 2333732), (17830, 1166866), (30707, 677540), (33877, 614140), (35660, 583433), (61414, 338770), (67754, 307070), (122828, 169385), (135508, 153535)]