21425800

素因数分解:

$2^3\times 5^2\times {\mathrm{11}}^1\times {\mathrm{9739}}^1$

素因数の和:9766

約数の個数: 48

約数和(自身を含む): 54349200

約数和(自身を除く): 32923400

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, 9739, 19478, 38956, 48695, 77912, 97390, 107129, 194780, 214258, 243475, 389560, 428516, 486950, 535645, 857032, 973900, 1071290, 1947800, 2142580, 2678225, 4285160, 5356450, 10712900, 21425800]

約数ペア:

[(1, 21425800), (2, 10712900), (4, 5356450), (5, 4285160), (8, 2678225), (10, 2142580), (11, 1947800), (20, 1071290), (22, 973900), (25, 857032), (40, 535645), (44, 486950), (50, 428516), (55, 389560), (88, 243475), (100, 214258), (110, 194780), (200, 107129), (220, 97390), (275, 77912), (440, 48695), (550, 38956), (1100, 19478), (2200, 9739)]