19929800

素因数分解:

$2^3\times 5^2\times {\mathrm{11}}^1\times {\mathrm{9059}}^1$

素因数の和:9086

約数の個数: 48

約数和(自身を含む): 50554800

約数和(自身を除く): 30625000

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 40, 44, 50, 55, 88, 100, 110, 200, 220, 275, 440, 550, 1100, 2200, 9059, 18118, 36236, 45295, 72472, 90590, 99649, 181180, 199298, 226475, 362360, 398596, 452950, 498245, 797192, 905900, 996490, 1811800, 1992980, 2491225, 3985960, 4982450, 9964900, 19929800]

約数ペア:

[(1, 19929800), (2, 9964900), (4, 4982450), (5, 3985960), (8, 2491225), (10, 1992980), (11, 1811800), (20, 996490), (22, 905900), (25, 797192), (40, 498245), (44, 452950), (50, 398596), (55, 362360), (88, 226475), (100, 199298), (110, 181180), (200, 99649), (220, 90590), (275, 72472), (440, 45295), (550, 36236), (1100, 18118), (2200, 9059)]