72904220

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{51341}}^1$

素因数の和:51421

約数の個数: 24

約数和(自身を含む): 155258208

約数和(自身を除く): 82353988

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 51341, 102682, 205364, 256705, 513410, 1026820, 3645211, 7290422, 14580844, 18226055, 36452110, 72904220]

約数ペア:

[(1, 72904220), (2, 36452110), (4, 18226055), (5, 14580844), (10, 7290422), (20, 3645211), (71, 1026820), (142, 513410), (284, 256705), (355, 205364), (710, 102682), (1420, 51341)]