20177021968

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{199567}}^1$

素因数の和:199735

約数の個数: 40

約数和(自身を含む): 40089219840

約数和(自身を除く): 19912197872

約数列:

[1, 2, 4, 8, 16, 71, 89, 142, 178, 284, 356, 568, 712, 1136, 1424, 6319, 12638, 25276, 50552, 101104, 199567, 399134, 798268, 1596536, 3193072, 14169257, 17761463, 28338514, 35522926, 56677028, 71045852, 113354056, 142091704, 226708112, 284183408, 1261063873, 2522127746, 5044255492, 10088510984, 20177021968]

約数ペア:

[(1, 20177021968), (2, 10088510984), (4, 5044255492), (8, 2522127746), (16, 1261063873), (71, 284183408), (89, 226708112), (142, 142091704), (178, 113354056), (284, 71045852), (356, 56677028), (568, 35522926), (712, 28338514), (1136, 17761463), (1424, 14169257), (6319, 3193072), (12638, 1596536), (25276, 798268), (50552, 399134), (101104, 199567)]