78621890

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{1997}}^1$

素因数の和:2162

約数の個数: 32

約数和(自身を含む): 147308544

約数和(自身を除く): 68686654

約数列:

[1, 2, 5, 10, 31, 62, 127, 155, 254, 310, 635, 1270, 1997, 3937, 3994, 7874, 9985, 19685, 19970, 39370, 61907, 123814, 253619, 309535, 507238, 619070, 1268095, 2536190, 7862189, 15724378, 39310945, 78621890]

約数ペア:

[(1, 78621890), (2, 39310945), (5, 15724378), (10, 7862189), (31, 2536190), (62, 1268095), (127, 619070), (155, 507238), (254, 309535), (310, 253619), (635, 123814), (1270, 61907), (1997, 39370), (3937, 19970), (3994, 19685), (7874, 9985)]