8156980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{229}}^1$

素因数の和:388

約数の個数: 48

約数和(自身を含む): 18663120

約数和(自身を除く): 10506140

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 137, 229, 260, 274, 458, 548, 685, 916, 1145, 1370, 1781, 2290, 2740, 2977, 3562, 4580, 5954, 7124, 8905, 11908, 14885, 17810, 29770, 31373, 35620, 59540, 62746, 125492, 156865, 313730, 407849, 627460, 815698, 1631396, 2039245, 4078490, 8156980]

約数ペア:

[(1, 8156980), (2, 4078490), (4, 2039245), (5, 1631396), (10, 815698), (13, 627460), (20, 407849), (26, 313730), (52, 156865), (65, 125492), (130, 62746), (137, 59540), (229, 35620), (260, 31373), (274, 29770), (458, 17810), (548, 14885), (685, 11908), (916, 8905), (1145, 7124), (1370, 5954), (1781, 4580), (2290, 3562), (2740, 2977)]