21809500

素因数分解:

$2^2\times 5^3\times {\mathrm{53}}^1\times {\mathrm{823}}^1$

素因数の和:895

約数の個数: 48

約数和(自身を含む): 48589632

約数和(自身を除く): 26780132

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 53, 100, 106, 125, 212, 250, 265, 500, 530, 823, 1060, 1325, 1646, 2650, 3292, 4115, 5300, 6625, 8230, 13250, 16460, 20575, 26500, 41150, 43619, 82300, 87238, 102875, 174476, 205750, 218095, 411500, 436190, 872380, 1090475, 2180950, 4361900, 5452375, 10904750, 21809500]

約数ペア:

[(1, 21809500), (2, 10904750), (4, 5452375), (5, 4361900), (10, 2180950), (20, 1090475), (25, 872380), (50, 436190), (53, 411500), (100, 218095), (106, 205750), (125, 174476), (212, 102875), (250, 87238), (265, 82300), (500, 43619), (530, 41150), (823, 26500), (1060, 20575), (1325, 16460), (1646, 13250), (2650, 8230), (3292, 6625), (4115, 5300)]