21779240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{77783}}^1$

素因数の和:77801

約数の個数: 32

約数和(自身を含む): 56004480

約数和(自身を除く): 34225240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 77783, 155566, 311132, 388915, 544481, 622264, 777830, 1088962, 1555660, 2177924, 2722405, 3111320, 4355848, 5444810, 10889620, 21779240]

約数ペア:

[(1, 21779240), (2, 10889620), (4, 5444810), (5, 4355848), (7, 3111320), (8, 2722405), (10, 2177924), (14, 1555660), (20, 1088962), (28, 777830), (35, 622264), (40, 544481), (56, 388915), (70, 311132), (140, 155566), (280, 77783)]