21249400

素因数分解:

$2^3\times 5^2\times {\mathrm{181}}^1\times {\mathrm{587}}^1$

素因数の和:784

約数の個数: 48

約数和(自身を含む): 49762440

約数和(自身を除く): 28513040

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 181, 200, 362, 587, 724, 905, 1174, 1448, 1810, 2348, 2935, 3620, 4525, 4696, 5870, 7240, 9050, 11740, 14675, 18100, 23480, 29350, 36200, 58700, 106247, 117400, 212494, 424988, 531235, 849976, 1062470, 2124940, 2656175, 4249880, 5312350, 10624700, 21249400]

約数ペア:

[(1, 21249400), (2, 10624700), (4, 5312350), (5, 4249880), (8, 2656175), (10, 2124940), (20, 1062470), (25, 849976), (40, 531235), (50, 424988), (100, 212494), (181, 117400), (200, 106247), (362, 58700), (587, 36200), (724, 29350), (905, 23480), (1174, 18100), (1448, 14675), (1810, 11740), (2348, 9050), (2935, 7240), (3620, 5870), (4525, 4696)]