19940965

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{239}}^1$

素因数の和:333

約数の個数: 32

約数和(自身を含む): 27578880

約数和(自身を除く): 7637915

約数列:

[1, 5, 11, 37, 41, 55, 185, 205, 239, 407, 451, 1195, 1517, 2035, 2255, 2629, 7585, 8843, 9799, 13145, 16687, 44215, 48995, 83435, 97273, 107789, 362563, 486365, 538945, 1812815, 3988193, 19940965]

約数ペア:

[(1, 19940965), (5, 3988193), (11, 1812815), (37, 538945), (41, 486365), (55, 362563), (185, 107789), (205, 97273), (239, 83435), (407, 48995), (451, 44215), (1195, 16687), (1517, 13145), (2035, 9799), (2255, 8843), (2629, 7585)]