20964836

素因数分解:

$2^2\times {\mathrm{67}}^1\times {\mathrm{137}}^1\times {\mathrm{571}}^1$

素因数の和:779

約数の個数: 24

約数和(自身を含む): 37573536

約数和(自身を除く): 16608700

約数列:

[1, 2, 4, 67, 134, 137, 268, 274, 548, 571, 1142, 2284, 9179, 18358, 36716, 38257, 76514, 78227, 153028, 156454, 312908, 5241209, 10482418, 20964836]

約数ペア:

[(1, 20964836), (2, 10482418), (4, 5241209), (67, 312908), (134, 156454), (137, 153028), (268, 78227), (274, 76514), (548, 38257), (571, 36716), (1142, 18358), (2284, 9179)]