21847605

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{181}}^1\times {\mathrm{619}}^1$

素因数の和:821

約数の個数: 32

約数和(自身を含む): 37914240

約数和(自身を除く): 16066635

約数列:

[1, 3, 5, 13, 15, 39, 65, 181, 195, 543, 619, 905, 1857, 2353, 2715, 3095, 7059, 8047, 9285, 11765, 24141, 35295, 40235, 112039, 120705, 336117, 560195, 1456507, 1680585, 4369521, 7282535, 21847605]

約数ペア:

[(1, 21847605), (3, 7282535), (5, 4369521), (13, 1680585), (15, 1456507), (39, 560195), (65, 336117), (181, 120705), (195, 112039), (543, 40235), (619, 35295), (905, 24141), (1857, 11765), (2353, 9285), (2715, 8047), (3095, 7059)]