20120412080

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{173}}^1\times {\mathrm{33809}}^1$

素因数の和:34038

約数の個数: 80

約数和(自身を含む): 48145980960

約数和(自身を除く): 28025568880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 173, 215, 344, 346, 430, 688, 692, 860, 865, 1384, 1720, 1730, 2768, 3440, 3460, 6920, 7439, 13840, 14878, 29756, 33809, 37195, 59512, 67618, 74390, 119024, 135236, 148780, 169045, 270472, 297560, 338090, 540944, 595120, 676180, 1352360, 1453787, 2704720, 2907574, 5815148, 5848957, 7268935, 11630296, 11697914, 14537870, 23260592, 23395828, 29075740, 29244785, 46791656, 58151480, 58489570, 93583312, 116302960, 116979140, 233958280, 251505151, 467916560, 503010302, 1006020604, 1257525755, 2012041208, 2515051510, 4024082416, 5030103020, 10060206040, 20120412080]

約数ペア:

[(1, 20120412080), (2, 10060206040), (4, 5030103020), (5, 4024082416), (8, 2515051510), (10, 2012041208), (16, 1257525755), (20, 1006020604), (40, 503010302), (43, 467916560), (80, 251505151), (86, 233958280), (172, 116979140), (173, 116302960), (215, 93583312), (344, 58489570), (346, 58151480), (430, 46791656), (688, 29244785), (692, 29075740), (860, 23395828), (865, 23260592), (1384, 14537870), (1720, 11697914), (1730, 11630296), (2768, 7268935), (3440, 5848957), (3460, 5815148), (6920, 2907574), (7439, 2704720), (13840, 1453787), (14878, 1352360), (29756, 676180), (33809, 595120), (37195, 540944), (59512, 338090), (67618, 297560), (74390, 270472), (119024, 169045), (135236, 148780)]