91561720

素因数分解:

$2^3\times 5^1\times {\mathrm{661}}^1\times {\mathrm{3463}}^1$

素因数の和:4135

約数の個数: 32

約数和(自身を含む): 206385120

約数和(自身を除く): 114823400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 661, 1322, 2644, 3305, 3463, 5288, 6610, 6926, 13220, 13852, 17315, 26440, 27704, 34630, 69260, 138520, 2289043, 4578086, 9156172, 11445215, 18312344, 22890430, 45780860, 91561720]

約数ペア:

[(1, 91561720), (2, 45780860), (4, 22890430), (5, 18312344), (8, 11445215), (10, 9156172), (20, 4578086), (40, 2289043), (661, 138520), (1322, 69260), (2644, 34630), (3305, 27704), (3463, 26440), (5288, 17315), (6610, 13852), (6926, 13220)]