21017900

素因数分解:

$2^2\times 5^2\times {\mathrm{67}}^1\times {\mathrm{3137}}^1$

素因数の和:3218

約数の個数: 36

約数和(自身を含む): 46304328

約数和(自身を除く): 25286428

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 67, 100, 134, 268, 335, 670, 1340, 1675, 3137, 3350, 6274, 6700, 12548, 15685, 31370, 62740, 78425, 156850, 210179, 313700, 420358, 840716, 1050895, 2101790, 4203580, 5254475, 10508950, 21017900]

約数ペア:

[(1, 21017900), (2, 10508950), (4, 5254475), (5, 4203580), (10, 2101790), (20, 1050895), (25, 840716), (50, 420358), (67, 313700), (100, 210179), (134, 156850), (268, 78425), (335, 62740), (670, 31370), (1340, 15685), (1675, 12548), (3137, 6700), (3350, 6274)]