21332115

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{241}}^1\times {\mathrm{281}}^1$

素因数の和:540

約数の個数: 48

約数和(自身を含む): 42584256

約数和(自身を除く): 21252141

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 241, 281, 315, 723, 843, 1205, 1405, 1687, 1967, 2169, 2529, 3615, 4215, 5061, 5901, 8435, 9835, 10845, 12645, 15183, 17703, 25305, 29505, 67721, 75915, 88515, 203163, 338605, 474047, 609489, 1015815, 1422141, 2370235, 3047445, 4266423, 7110705, 21332115]

約数ペア:

[(1, 21332115), (3, 7110705), (5, 4266423), (7, 3047445), (9, 2370235), (15, 1422141), (21, 1015815), (35, 609489), (45, 474047), (63, 338605), (105, 203163), (241, 88515), (281, 75915), (315, 67721), (723, 29505), (843, 25305), (1205, 17703), (1405, 15183), (1687, 12645), (1967, 10845), (2169, 9835), (2529, 8435), (3615, 5901), (4215, 5061)]