21464555

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{271}}^1$

素因数の和:387

約数の個数: 32

約数和(自身を含む): 30916608

約数和(自身を除く): 9452053

約数列:

[1, 5, 7, 31, 35, 73, 155, 217, 271, 365, 511, 1085, 1355, 1897, 2263, 2555, 8401, 9485, 11315, 15841, 19783, 42005, 58807, 79205, 98915, 138481, 294035, 613273, 692405, 3066365, 4292911, 21464555]

約数ペア:

[(1, 21464555), (5, 4292911), (7, 3066365), (31, 692405), (35, 613273), (73, 294035), (155, 138481), (217, 98915), (271, 79205), (365, 58807), (511, 42005), (1085, 19783), (1355, 15841), (1897, 11315), (2263, 9485), (2555, 8401)]