19986486

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{101}}^1$

素因数の和:221

約数の個数: 64

約数和(自身を含む): 45239040

約数和(自身を除く): 25252554

約数列:

[1, 2, 3, 6, 13, 26, 39, 43, 59, 78, 86, 101, 118, 129, 177, 202, 258, 303, 354, 559, 606, 767, 1118, 1313, 1534, 1677, 2301, 2537, 2626, 3354, 3939, 4343, 4602, 5074, 5959, 7611, 7878, 8686, 11918, 13029, 15222, 17877, 26058, 32981, 35754, 56459, 65962, 77467, 98943, 112918, 154934, 169377, 197886, 232401, 256237, 338754, 464802, 512474, 768711, 1537422, 3331081, 6662162, 9993243, 19986486]

約数ペア:

[(1, 19986486), (2, 9993243), (3, 6662162), (6, 3331081), (13, 1537422), (26, 768711), (39, 512474), (43, 464802), (59, 338754), (78, 256237), (86, 232401), (101, 197886), (118, 169377), (129, 154934), (177, 112918), (202, 98943), (258, 77467), (303, 65962), (354, 56459), (559, 35754), (606, 32981), (767, 26058), (1118, 17877), (1313, 15222), (1534, 13029), (1677, 11918), (2301, 8686), (2537, 7878), (2626, 7611), (3354, 5959), (3939, 5074), (4343, 4602)]