20162748880

素因数分解:

$2^4\times 5^1\times {\mathrm{3581}}^1\times {\mathrm{70381}}^1$

素因数の和:73975

約数の個数: 40

約数和(自身を含む): 46892148264

約数和(自身を除く): 26729399384

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3581, 7162, 14324, 17905, 28648, 35810, 57296, 70381, 71620, 140762, 143240, 281524, 286480, 351905, 563048, 703810, 1126096, 1407620, 2815240, 5630480, 252034361, 504068722, 1008137444, 1260171805, 2016274888, 2520343610, 4032549776, 5040687220, 10081374440, 20162748880]

約数ペア:

[(1, 20162748880), (2, 10081374440), (4, 5040687220), (5, 4032549776), (8, 2520343610), (10, 2016274888), (16, 1260171805), (20, 1008137444), (40, 504068722), (80, 252034361), (3581, 5630480), (7162, 2815240), (14324, 1407620), (17905, 1126096), (28648, 703810), (35810, 563048), (57296, 351905), (70381, 286480), (71620, 281524), (140762, 143240)]