64081780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1$

素因数の和:281

約数の個数: 96

約数和(自身を含む): 160876800

約数和(自身を除く): 96795020

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 37, 70, 74, 89, 139, 140, 148, 178, 185, 259, 278, 356, 370, 445, 518, 556, 623, 695, 740, 890, 973, 1036, 1246, 1295, 1390, 1780, 1946, 2492, 2590, 2780, 3115, 3293, 3892, 4865, 5143, 5180, 6230, 6586, 9730, 10286, 12371, 12460, 13172, 16465, 19460, 20572, 23051, 24742, 25715, 32930, 36001, 46102, 49484, 51430, 61855, 65860, 72002, 86597, 92204, 102860, 115255, 123710, 144004, 173194, 180005, 230510, 247420, 346388, 360010, 432985, 457727, 461020, 720020, 865970, 915454, 1731940, 1830908, 2288635, 3204089, 4577270, 6408178, 9154540, 12816356, 16020445, 32040890, 64081780]

約数ペア:

[(1, 64081780), (2, 32040890), (4, 16020445), (5, 12816356), (7, 9154540), (10, 6408178), (14, 4577270), (20, 3204089), (28, 2288635), (35, 1830908), (37, 1731940), (70, 915454), (74, 865970), (89, 720020), (139, 461020), (140, 457727), (148, 432985), (178, 360010), (185, 346388), (259, 247420), (278, 230510), (356, 180005), (370, 173194), (445, 144004), (518, 123710), (556, 115255), (623, 102860), (695, 92204), (740, 86597), (890, 72002), (973, 65860), (1036, 61855), (1246, 51430), (1295, 49484), (1390, 46102), (1780, 36001), (1946, 32930), (2492, 25715), (2590, 24742), (2780, 23051), (3115, 20572), (3293, 19460), (3892, 16465), (4865, 13172), (5143, 12460), (5180, 12371), (6230, 10286), (6586, 9730)]