21289808

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{42923}}^1$

素因数の和:42962

約数の個数: 20

約数和(自身を含む): 42580608

約数和(自身を除く): 21290800

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 42923, 85846, 171692, 343384, 686768, 1330613, 2661226, 5322452, 10644904, 21289808]

約数ペア:

[(1, 21289808), (2, 10644904), (4, 5322452), (8, 2661226), (16, 1330613), (31, 686768), (62, 343384), (124, 171692), (248, 85846), (496, 42923)]