21477695

素因数分解:

$5^1\times {\mathrm{19}}^2\times {\mathrm{73}}^1\times {\mathrm{163}}^1$

素因数の和:279

約数の個数: 24

約数和(自身を含む): 27742896

約数和(自身を除く): 6265201

約数列:

[1, 5, 19, 73, 95, 163, 361, 365, 815, 1387, 1805, 3097, 6935, 11899, 15485, 26353, 58843, 59495, 131765, 226081, 294215, 1130405, 4295539, 21477695]

約数ペア:

[(1, 21477695), (5, 4295539), (19, 1130405), (73, 294215), (95, 226081), (163, 131765), (361, 59495), (365, 58843), (815, 26353), (1387, 15485), (1805, 11899), (3097, 6935)]