20437960

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{5741}}^1$

素因数の和:5841

約数の個数: 32

約数和(自身を含む): 46510200

約数和(自身を除く): 26072240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 5741, 11482, 22964, 28705, 45928, 57410, 114820, 229640, 510949, 1021898, 2043796, 2554745, 4087592, 5109490, 10218980, 20437960]

約数ペア:

[(1, 20437960), (2, 10218980), (4, 5109490), (5, 4087592), (8, 2554745), (10, 2043796), (20, 1021898), (40, 510949), (89, 229640), (178, 114820), (356, 57410), (445, 45928), (712, 28705), (890, 22964), (1780, 11482), (3560, 5741)]