64968140

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{137}}^1\times {\mathrm{181}}^1$

素因数の和:458

約数の個数: 48

約数和(自身を含む): 139243104

約数和(自身を除く): 74274964

約数列:

[1, 2, 4, 5, 10, 20, 131, 137, 181, 262, 274, 362, 524, 548, 655, 685, 724, 905, 1310, 1370, 1810, 2620, 2740, 3620, 17947, 23711, 24797, 35894, 47422, 49594, 71788, 89735, 94844, 99188, 118555, 123985, 179470, 237110, 247970, 358940, 474220, 495940, 3248407, 6496814, 12993628, 16242035, 32484070, 64968140]

約数ペア:

[(1, 64968140), (2, 32484070), (4, 16242035), (5, 12993628), (10, 6496814), (20, 3248407), (131, 495940), (137, 474220), (181, 358940), (262, 247970), (274, 237110), (362, 179470), (524, 123985), (548, 118555), (655, 99188), (685, 94844), (724, 89735), (905, 71788), (1310, 49594), (1370, 47422), (1810, 35894), (2620, 24797), (2740, 23711), (3620, 17947)]