20103850

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{197}}^1$

素因数の和:379

約数の個数: 48

約数和(自身を含む): 40731768

約数和(自身を除く): 20627918

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 157, 197, 314, 325, 394, 650, 785, 985, 1570, 1970, 2041, 2561, 3925, 4082, 4925, 5122, 7850, 9850, 10205, 12805, 20410, 25610, 30929, 51025, 61858, 64025, 102050, 128050, 154645, 309290, 402077, 773225, 804154, 1546450, 2010385, 4020770, 10051925, 20103850]

約数ペア:

[(1, 20103850), (2, 10051925), (5, 4020770), (10, 2010385), (13, 1546450), (25, 804154), (26, 773225), (50, 402077), (65, 309290), (130, 154645), (157, 128050), (197, 102050), (314, 64025), (325, 61858), (394, 51025), (650, 30929), (785, 25610), (985, 20410), (1570, 12805), (1970, 10205), (2041, 9850), (2561, 7850), (3925, 5122), (4082, 4925)]