20968695

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{3851}}^1$

素因数の和:3884

約数の個数: 36

約数和(自身を含む): 39960648

約数和(自身を除く): 18991953

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 121, 165, 363, 495, 605, 1089, 1815, 3851, 5445, 11553, 19255, 34659, 42361, 57765, 127083, 173295, 211805, 381249, 465971, 635415, 1397913, 1906245, 2329855, 4193739, 6989565, 20968695]

約数ペア:

[(1, 20968695), (3, 6989565), (5, 4193739), (9, 2329855), (11, 1906245), (15, 1397913), (33, 635415), (45, 465971), (55, 381249), (99, 211805), (121, 173295), (165, 127083), (363, 57765), (495, 42361), (605, 34659), (1089, 19255), (1815, 11553), (3851, 5445)]