20962984

素因数分解:

$2^3\times 7^2\times {\mathrm{53}}^1\times {\mathrm{1009}}^1$

素因数の和:1082

約数の個数: 48

約数和(自身を含む): 46631700

約数和(自身を除く): 25668716

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 53, 56, 98, 106, 196, 212, 371, 392, 424, 742, 1009, 1484, 2018, 2597, 2968, 4036, 5194, 7063, 8072, 10388, 14126, 20776, 28252, 49441, 53477, 56504, 98882, 106954, 197764, 213908, 374339, 395528, 427816, 748678, 1497356, 2620373, 2994712, 5240746, 10481492, 20962984]

約数ペア:

[(1, 20962984), (2, 10481492), (4, 5240746), (7, 2994712), (8, 2620373), (14, 1497356), (28, 748678), (49, 427816), (53, 395528), (56, 374339), (98, 213908), (106, 197764), (196, 106954), (212, 98882), (371, 56504), (392, 53477), (424, 49441), (742, 28252), (1009, 20776), (1484, 14126), (2018, 10388), (2597, 8072), (2968, 7063), (4036, 5194)]