20808918

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{5231}}^1$

素因数の和:5269

約数の個数: 48

約数和(自身を含む): 51420096

約数和(自身を除く): 30611178

約数列:

[1, 2, 3, 6, 9, 13, 17, 18, 26, 34, 39, 51, 78, 102, 117, 153, 221, 234, 306, 442, 663, 1326, 1989, 3978, 5231, 10462, 15693, 31386, 47079, 68003, 88927, 94158, 136006, 177854, 204009, 266781, 408018, 533562, 612027, 800343, 1156051, 1224054, 1600686, 2312102, 3468153, 6936306, 10404459, 20808918]

約数ペア:

[(1, 20808918), (2, 10404459), (3, 6936306), (6, 3468153), (9, 2312102), (13, 1600686), (17, 1224054), (18, 1156051), (26, 800343), (34, 612027), (39, 533562), (51, 408018), (78, 266781), (102, 204009), (117, 177854), (153, 136006), (221, 94158), (234, 88927), (306, 68003), (442, 47079), (663, 31386), (1326, 15693), (1989, 10462), (3978, 5231)]