21353884

素因数分解:

$2^2\times {\mathrm{37}}^1\times {\mathrm{157}}^1\times {\mathrm{919}}^1$

素因数の和:1117

約数の個数: 24

約数和(自身を含む): 38665760

約数和(自身を除く): 17311876

約数列:

[1, 2, 4, 37, 74, 148, 157, 314, 628, 919, 1838, 3676, 5809, 11618, 23236, 34003, 68006, 136012, 144283, 288566, 577132, 5338471, 10676942, 21353884]

約数ペア:

[(1, 21353884), (2, 10676942), (4, 5338471), (37, 577132), (74, 288566), (148, 144283), (157, 136012), (314, 68006), (628, 34003), (919, 23236), (1838, 11618), (3676, 5809)]