19905968

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{599}}^1$

素因数の和:705

約数の個数: 40

約数和(自身を含む): 40473600

約数和(自身を除く): 20567632

約数列:

[1, 2, 4, 8, 16, 31, 62, 67, 124, 134, 248, 268, 496, 536, 599, 1072, 1198, 2077, 2396, 4154, 4792, 8308, 9584, 16616, 18569, 33232, 37138, 40133, 74276, 80266, 148552, 160532, 297104, 321064, 642128, 1244123, 2488246, 4976492, 9952984, 19905968]

約数ペア:

[(1, 19905968), (2, 9952984), (4, 4976492), (8, 2488246), (16, 1244123), (31, 642128), (62, 321064), (67, 297104), (124, 160532), (134, 148552), (248, 80266), (268, 74276), (496, 40133), (536, 37138), (599, 33232), (1072, 18569), (1198, 16616), (2077, 9584), (2396, 8308), (4154, 4792)]