20123305520

素因数分解:

$2^4\times 5^1\times {\mathrm{6389}}^1\times {\mathrm{39371}}^1$

素因数の和:45773

約数の個数: 40

約数和(自身を含む): 46795196880

約数和(自身を除く): 26671891360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 6389, 12778, 25556, 31945, 39371, 51112, 63890, 78742, 102224, 127780, 157484, 196855, 255560, 314968, 393710, 511120, 629936, 787420, 1574840, 3149680, 251541319, 503082638, 1006165276, 1257706595, 2012330552, 2515413190, 4024661104, 5030826380, 10061652760, 20123305520]

約数ペア:

[(1, 20123305520), (2, 10061652760), (4, 5030826380), (5, 4024661104), (8, 2515413190), (10, 2012330552), (16, 1257706595), (20, 1006165276), (40, 503082638), (80, 251541319), (6389, 3149680), (12778, 1574840), (25556, 787420), (31945, 629936), (39371, 511120), (51112, 393710), (63890, 314968), (78742, 255560), (102224, 196855), (127780, 157484)]