20791850

素因数分解:

$2^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{401}}^1$

素因数の和:491

約数の個数: 48

約数和(自身を含む): 41722776

約数和(自身を除く): 20930926

約数列:

[1, 2, 5, 10, 17, 25, 34, 50, 61, 85, 122, 170, 305, 401, 425, 610, 802, 850, 1037, 1525, 2005, 2074, 3050, 4010, 5185, 6817, 10025, 10370, 13634, 20050, 24461, 25925, 34085, 48922, 51850, 68170, 122305, 170425, 244610, 340850, 415837, 611525, 831674, 1223050, 2079185, 4158370, 10395925, 20791850]

約数ペア:

[(1, 20791850), (2, 10395925), (5, 4158370), (10, 2079185), (17, 1223050), (25, 831674), (34, 611525), (50, 415837), (61, 340850), (85, 244610), (122, 170425), (170, 122305), (305, 68170), (401, 51850), (425, 48922), (610, 34085), (802, 25925), (850, 24461), (1037, 20050), (1525, 13634), (2005, 10370), (2074, 10025), (3050, 6817), (4010, 5185)]