20512019984

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{617237}}^1$

素因数の和:617343

約数の個数: 40

約数和(自身を含む): 41636406528

約数和(自身を除く): 21124386544

約数列:

[1, 2, 4, 8, 16, 31, 62, 67, 124, 134, 248, 268, 496, 536, 1072, 2077, 4154, 8308, 16616, 33232, 617237, 1234474, 2468948, 4937896, 9875792, 19134347, 38268694, 41354879, 76537388, 82709758, 153074776, 165419516, 306149552, 330839032, 661678064, 1282001249, 2564002498, 5128004996, 10256009992, 20512019984]

約数ペア:

[(1, 20512019984), (2, 10256009992), (4, 5128004996), (8, 2564002498), (16, 1282001249), (31, 661678064), (62, 330839032), (67, 306149552), (124, 165419516), (134, 153074776), (248, 82709758), (268, 76537388), (496, 41354879), (536, 38268694), (1072, 19134347), (2077, 9875792), (4154, 4937896), (8308, 2468948), (16616, 1234474), (33232, 617237)]