20009661920

素因数分解:

$2^5\times 5^1\times {\mathrm{109}}^1\times {\mathrm{503}}^1\times {\mathrm{2281}}^1$

素因数の和:2908

約数の個数: 96

約数和(自身を含む): 47822322240

約数和(自身を除く): 27812660320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 109, 160, 218, 436, 503, 545, 872, 1006, 1090, 1744, 2012, 2180, 2281, 2515, 3488, 4024, 4360, 4562, 5030, 8048, 8720, 9124, 10060, 11405, 16096, 17440, 18248, 20120, 22810, 36496, 40240, 45620, 54827, 72992, 80480, 91240, 109654, 182480, 219308, 248629, 274135, 364960, 438616, 497258, 548270, 877232, 994516, 1096540, 1147343, 1243145, 1754464, 1989032, 2193080, 2294686, 2486290, 3978064, 4386160, 4589372, 4972580, 5736715, 7956128, 8772320, 9178744, 9945160, 11473430, 18357488, 19890320, 22946860, 36714976, 39780640, 45893720, 91787440, 125060387, 183574880, 250120774, 500241548, 625301935, 1000483096, 1250603870, 2000966192, 2501207740, 4001932384, 5002415480, 10004830960, 20009661920]

約数ペア:

[(1, 20009661920), (2, 10004830960), (4, 5002415480), (5, 4001932384), (8, 2501207740), (10, 2000966192), (16, 1250603870), (20, 1000483096), (32, 625301935), (40, 500241548), (80, 250120774), (109, 183574880), (160, 125060387), (218, 91787440), (436, 45893720), (503, 39780640), (545, 36714976), (872, 22946860), (1006, 19890320), (1090, 18357488), (1744, 11473430), (2012, 9945160), (2180, 9178744), (2281, 8772320), (2515, 7956128), (3488, 5736715), (4024, 4972580), (4360, 4589372), (4562, 4386160), (5030, 3978064), (8048, 2486290), (8720, 2294686), (9124, 2193080), (10060, 1989032), (11405, 1754464), (16096, 1243145), (17440, 1147343), (18248, 1096540), (20120, 994516), (22810, 877232), (36496, 548270), (40240, 497258), (45620, 438616), (54827, 364960), (72992, 274135), (80480, 248629), (91240, 219308), (109654, 182480)]