16812405

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{21977}}^1$

素因数の和:22005

約数の個数: 24

約数和(自身を含む): 30857112

約数和(自身を除く): 14044707

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 21977, 65931, 109885, 197793, 329655, 373609, 988965, 1120827, 1868045, 3362481, 5604135, 16812405]

約数ペア:

[(1, 16812405), (3, 5604135), (5, 3362481), (9, 1868045), (15, 1120827), (17, 988965), (45, 373609), (51, 329655), (85, 197793), (153, 109885), (255, 65931), (765, 21977)]