21464695

素因数分解:

$5^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{1109}}^1$

素因数の和:1207

約数の個数: 24

約数和(自身を含む): 30369600

約数和(自身を除く): 8904905

約数列:

[1, 5, 7, 35, 49, 79, 245, 395, 553, 1109, 2765, 3871, 5545, 7763, 19355, 38815, 54341, 87611, 271705, 438055, 613277, 3066385, 4292939, 21464695]

約数ペア:

[(1, 21464695), (5, 4292939), (7, 3066385), (35, 613277), (49, 438055), (79, 271705), (245, 87611), (395, 54341), (553, 38815), (1109, 19355), (2765, 7763), (3871, 5545)]