21815900

素因数分解:

$2^2\times 5^2\times {\mathrm{269}}^1\times {\mathrm{811}}^1$

素因数の和:1094

約数の個数: 36

約数和(自身を含む): 47575080

約数和(自身を除く): 25759180

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 269, 538, 811, 1076, 1345, 1622, 2690, 3244, 4055, 5380, 6725, 8110, 13450, 16220, 20275, 26900, 40550, 81100, 218159, 436318, 872636, 1090795, 2181590, 4363180, 5453975, 10907950, 21815900]

約数ペア:

[(1, 21815900), (2, 10907950), (4, 5453975), (5, 4363180), (10, 2181590), (20, 1090795), (25, 872636), (50, 436318), (100, 218159), (269, 81100), (538, 40550), (811, 26900), (1076, 20275), (1345, 16220), (1622, 13450), (2690, 8110), (3244, 6725), (4055, 5380)]