26980780

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1\times {\mathrm{229}}^1$

素因数の和:418

約数の個数: 48

約数和(自身を含む): 58655520

約数和(自身を除く): 31674740

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 137, 172, 215, 229, 274, 430, 458, 548, 685, 860, 916, 1145, 1370, 2290, 2740, 4580, 5891, 9847, 11782, 19694, 23564, 29455, 31373, 39388, 49235, 58910, 62746, 98470, 117820, 125492, 156865, 196940, 313730, 627460, 1349039, 2698078, 5396156, 6745195, 13490390, 26980780]

約数ペア:

[(1, 26980780), (2, 13490390), (4, 6745195), (5, 5396156), (10, 2698078), (20, 1349039), (43, 627460), (86, 313730), (137, 196940), (172, 156865), (215, 125492), (229, 117820), (274, 98470), (430, 62746), (458, 58910), (548, 49235), (685, 39388), (860, 31373), (916, 29455), (1145, 23564), (1370, 19694), (2290, 11782), (2740, 9847), (4580, 5891)]