127948180

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{71881}}^1$

素因数の和:71979

約数の個数: 24

約数和(自身を含む): 271713960

約数和(自身を除く): 143765780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 71881, 143762, 287524, 359405, 718810, 1437620, 6397409, 12794818, 25589636, 31987045, 63974090, 127948180]

約数ペア:

[(1, 127948180), (2, 63974090), (4, 31987045), (5, 25589636), (10, 12794818), (20, 6397409), (89, 1437620), (178, 718810), (356, 359405), (445, 287524), (890, 143762), (1780, 71881)]