21371172

素因数分解:

$2^2\times 3^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1\times {\mathrm{499}}^1$

素因数の和:632

約数の個数: 48

約数和(自身を含む): 51744000

約数和(自身を除く): 30372828

約数列:

[1, 2, 3, 4, 6, 12, 43, 83, 86, 129, 166, 172, 249, 258, 332, 498, 499, 516, 996, 998, 1497, 1996, 2994, 3569, 5988, 7138, 10707, 14276, 21414, 21457, 41417, 42828, 42914, 64371, 82834, 85828, 124251, 128742, 165668, 248502, 257484, 497004, 1780931, 3561862, 5342793, 7123724, 10685586, 21371172]

約数ペア:

[(1, 21371172), (2, 10685586), (3, 7123724), (4, 5342793), (6, 3561862), (12, 1780931), (43, 497004), (83, 257484), (86, 248502), (129, 165668), (166, 128742), (172, 124251), (249, 85828), (258, 82834), (332, 64371), (498, 42914), (499, 42828), (516, 41417), (996, 21457), (998, 21414), (1497, 14276), (1996, 10707), (2994, 7138), (3569, 5988)]