21254408

素因数分解:

$2^3\times 7^1\times {\mathrm{491}}^1\times {\mathrm{773}}^1$

素因数の和:1277

約数の個数: 32

約数和(自身を含む): 45696960

約数和(自身を除く): 24442552

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 491, 773, 982, 1546, 1964, 3092, 3437, 3928, 5411, 6184, 6874, 10822, 13748, 21644, 27496, 43288, 379543, 759086, 1518172, 2656801, 3036344, 5313602, 10627204, 21254408]

約数ペア:

[(1, 21254408), (2, 10627204), (4, 5313602), (7, 3036344), (8, 2656801), (14, 1518172), (28, 759086), (56, 379543), (491, 43288), (773, 27496), (982, 21644), (1546, 13748), (1964, 10822), (3092, 6874), (3437, 6184), (3928, 5411)]