21617992

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{197}}^1$

素因数の和:286

約数の個数: 64

約数和(自身を含む): 47044800

約数和(自身を除く): 25426808

約数列:

[1, 2, 4, 8, 11, 22, 29, 43, 44, 58, 86, 88, 116, 172, 197, 232, 319, 344, 394, 473, 638, 788, 946, 1247, 1276, 1576, 1892, 2167, 2494, 2552, 3784, 4334, 4988, 5713, 8471, 8668, 9976, 11426, 13717, 16942, 17336, 22852, 27434, 33884, 45704, 54868, 62843, 67768, 93181, 109736, 125686, 186362, 245659, 251372, 372724, 491318, 502744, 745448, 982636, 1965272, 2702249, 5404498, 10808996, 21617992]

約数ペア:

[(1, 21617992), (2, 10808996), (4, 5404498), (8, 2702249), (11, 1965272), (22, 982636), (29, 745448), (43, 502744), (44, 491318), (58, 372724), (86, 251372), (88, 245659), (116, 186362), (172, 125686), (197, 109736), (232, 93181), (319, 67768), (344, 62843), (394, 54868), (473, 45704), (638, 33884), (788, 27434), (946, 22852), (1247, 17336), (1276, 16942), (1576, 13717), (1892, 11426), (2167, 9976), (2494, 8668), (2552, 8471), (3784, 5713), (4334, 4988)]