21000388676

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{487}}^1\times {\mathrm{250709}}^1$

素因数の和:251243

約数の個数: 24

約数和(自身を含む): 37682715840

約数和(自身を除く): 16682327164

約数列:

[1, 2, 4, 43, 86, 172, 487, 974, 1948, 20941, 41882, 83764, 250709, 501418, 1002836, 10780487, 21560974, 43121948, 122095283, 244190566, 488381132, 5250097169, 10500194338, 21000388676]

約数ペア:

[(1, 21000388676), (2, 10500194338), (4, 5250097169), (43, 488381132), (86, 244190566), (172, 122095283), (487, 43121948), (974, 21560974), (1948, 10780487), (20941, 1002836), (41882, 501418), (83764, 250709)]