20274280

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{307}}^1$

素因数の和:458

約数の個数: 64

約数和(自身を含む): 49674240

約数和(自身を除く): 29399960

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 127, 130, 254, 260, 307, 508, 520, 614, 635, 1016, 1228, 1270, 1535, 1651, 2456, 2540, 3070, 3302, 3991, 5080, 6140, 6604, 7982, 8255, 12280, 13208, 15964, 16510, 19955, 31928, 33020, 38989, 39910, 66040, 77978, 79820, 155956, 159640, 194945, 311912, 389890, 506857, 779780, 1013714, 1559560, 2027428, 2534285, 4054856, 5068570, 10137140, 20274280]

約数ペア:

[(1, 20274280), (2, 10137140), (4, 5068570), (5, 4054856), (8, 2534285), (10, 2027428), (13, 1559560), (20, 1013714), (26, 779780), (40, 506857), (52, 389890), (65, 311912), (104, 194945), (127, 159640), (130, 155956), (254, 79820), (260, 77978), (307, 66040), (508, 39910), (520, 38989), (614, 33020), (635, 31928), (1016, 19955), (1228, 16510), (1270, 15964), (1535, 13208), (1651, 12280), (2456, 8255), (2540, 7982), (3070, 6604), (3302, 6140), (3991, 5080)]