21318218

素因数分解:

$2^1\times {\mathrm{83}}^1\times {\mathrm{167}}^1\times {\mathrm{769}}^1$

素因数の和:1021

約数の個数: 16

約数和(自身を含む): 32598720

約数和(自身を除く): 11280502

約数列:

[1, 2, 83, 166, 167, 334, 769, 1538, 13861, 27722, 63827, 127654, 128423, 256846, 10659109, 21318218]

約数ペア:

[(1, 21318218), (2, 10659109), (83, 256846), (166, 128423), (167, 127654), (334, 63827), (769, 27722), (1538, 13861)]