9999640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{503}}^1$

素因数の和:592

約数の個数: 64

約数和(自身を含む): 26127360

約数和(自身を除く): 16127720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 71, 140, 142, 280, 284, 355, 497, 503, 568, 710, 994, 1006, 1420, 1988, 2012, 2485, 2515, 2840, 3521, 3976, 4024, 4970, 5030, 7042, 9940, 10060, 14084, 17605, 19880, 20120, 28168, 35210, 35713, 70420, 71426, 140840, 142852, 178565, 249991, 285704, 357130, 499982, 714260, 999964, 1249955, 1428520, 1999928, 2499910, 4999820, 9999640]

約数ペア:

[(1, 9999640), (2, 4999820), (4, 2499910), (5, 1999928), (7, 1428520), (8, 1249955), (10, 999964), (14, 714260), (20, 499982), (28, 357130), (35, 285704), (40, 249991), (56, 178565), (70, 142852), (71, 140840), (140, 71426), (142, 70420), (280, 35713), (284, 35210), (355, 28168), (497, 20120), (503, 19880), (568, 17605), (710, 14084), (994, 10060), (1006, 9940), (1420, 7042), (1988, 5030), (2012, 4970), (2485, 4024), (2515, 3976), (2840, 3521)]