20156759540

素因数分解:

$2^2\times 5^1\times {\mathrm{15731}}^1\times {\mathrm{64067}}^1$

素因数の和:79807

約数の個数: 24

約数和(自身を含む): 42332546592

約数和(自身を除く): 22175787052

約数列:

[1, 2, 4, 5, 10, 20, 15731, 31462, 62924, 64067, 78655, 128134, 157310, 256268, 314620, 320335, 640670, 1281340, 1007837977, 2015675954, 4031351908, 5039189885, 10078379770, 20156759540]

約数ペア:

[(1, 20156759540), (2, 10078379770), (4, 5039189885), (5, 4031351908), (10, 2015675954), (20, 1007837977), (15731, 1281340), (31462, 640670), (62924, 320335), (64067, 314620), (78655, 256268), (128134, 157310)]