20195800

素因数分解:

$2^3\times 5^2\times {\mathrm{241}}^1\times {\mathrm{419}}^1$

素因数の和:676

約数の個数: 48

約数和(自身を含む): 47262600

約数和(自身を除く): 27066800

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 241, 419, 482, 838, 964, 1205, 1676, 1928, 2095, 2410, 3352, 4190, 4820, 6025, 8380, 9640, 10475, 12050, 16760, 20950, 24100, 41900, 48200, 83800, 100979, 201958, 403916, 504895, 807832, 1009790, 2019580, 2524475, 4039160, 5048950, 10097900, 20195800]

約数ペア:

[(1, 20195800), (2, 10097900), (4, 5048950), (5, 4039160), (8, 2524475), (10, 2019580), (20, 1009790), (25, 807832), (40, 504895), (50, 403916), (100, 201958), (200, 100979), (241, 83800), (419, 48200), (482, 41900), (838, 24100), (964, 20950), (1205, 16760), (1676, 12050), (1928, 10475), (2095, 9640), (2410, 8380), (3352, 6025), (4190, 4820)]