19921550

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{1249}}^1$

素因数の和:1301

約数の個数: 48

約数和(自身を含む): 41850000

約数和(自身を除く): 21928450

約数列:

[1, 2, 5, 10, 11, 22, 25, 29, 50, 55, 58, 110, 145, 275, 290, 319, 550, 638, 725, 1249, 1450, 1595, 2498, 3190, 6245, 7975, 12490, 13739, 15950, 27478, 31225, 36221, 62450, 68695, 72442, 137390, 181105, 343475, 362210, 398431, 686950, 796862, 905525, 1811050, 1992155, 3984310, 9960775, 19921550]

約数ペア:

[(1, 19921550), (2, 9960775), (5, 3984310), (10, 1992155), (11, 1811050), (22, 905525), (25, 796862), (29, 686950), (50, 398431), (55, 362210), (58, 343475), (110, 181105), (145, 137390), (275, 72442), (290, 68695), (319, 62450), (550, 36221), (638, 31225), (725, 27478), (1249, 15950), (1450, 13739), (1595, 12490), (2498, 7975), (3190, 6245)]