20081072

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{1607}}^1$

素因数の和:1697

約数の個数: 40

約数和(自身を含む): 43068672

約数和(自身を除く): 22987600

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 71, 88, 142, 176, 284, 568, 781, 1136, 1562, 1607, 3124, 3214, 6248, 6428, 12496, 12856, 17677, 25712, 35354, 70708, 114097, 141416, 228194, 282832, 456388, 912776, 1255067, 1825552, 2510134, 5020268, 10040536, 20081072]

約数ペア:

[(1, 20081072), (2, 10040536), (4, 5020268), (8, 2510134), (11, 1825552), (16, 1255067), (22, 912776), (44, 456388), (71, 282832), (88, 228194), (142, 141416), (176, 114097), (284, 70708), (568, 35354), (781, 25712), (1136, 17677), (1562, 12856), (1607, 12496), (3124, 6428), (3214, 6248)]