64415440

素因数分解:

$2^4\times 5^1\times {\mathrm{353}}^1\times {\mathrm{2281}}^1$

素因数の和:2647

約数の個数: 40

約数和(自身を含む): 150256008

約数和(自身を除く): 85840568

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 353, 706, 1412, 1765, 2281, 2824, 3530, 4562, 5648, 7060, 9124, 11405, 14120, 18248, 22810, 28240, 36496, 45620, 91240, 182480, 805193, 1610386, 3220772, 4025965, 6441544, 8051930, 12883088, 16103860, 32207720, 64415440]

約数ペア:

[(1, 64415440), (2, 32207720), (4, 16103860), (5, 12883088), (8, 8051930), (10, 6441544), (16, 4025965), (20, 3220772), (40, 1610386), (80, 805193), (353, 182480), (706, 91240), (1412, 45620), (1765, 36496), (2281, 28240), (2824, 22810), (3530, 18248), (4562, 14120), (5648, 11405), (7060, 9124)]