20978090

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{15773}}^1$

素因数の和:15806

約数の個数: 32

約数和(自身を含む): 45429120

約数和(自身を除く): 24451030

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 70, 95, 133, 190, 266, 665, 1330, 15773, 31546, 78865, 110411, 157730, 220822, 299687, 552055, 599374, 1104110, 1498435, 2097809, 2996870, 4195618, 10489045, 20978090]

約数ペア:

[(1, 20978090), (2, 10489045), (5, 4195618), (7, 2996870), (10, 2097809), (14, 1498435), (19, 1104110), (35, 599374), (38, 552055), (70, 299687), (95, 220822), (133, 157730), (190, 110411), (266, 78865), (665, 31546), (1330, 15773)]