20438284

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{53}}^2\times {\mathrm{107}}^1$

素因数の和:234

約数の個数: 36

約数和(自身を含む): 38959704

約数和(自身を除く): 18521420

約数列:

[1, 2, 4, 17, 34, 53, 68, 106, 107, 212, 214, 428, 901, 1802, 1819, 2809, 3604, 3638, 5618, 5671, 7276, 11236, 11342, 22684, 47753, 95506, 96407, 191012, 192814, 300563, 385628, 601126, 1202252, 5109571, 10219142, 20438284]

約数ペア:

[(1, 20438284), (2, 10219142), (4, 5109571), (17, 1202252), (34, 601126), (53, 385628), (68, 300563), (106, 192814), (107, 191012), (212, 96407), (214, 95506), (428, 47753), (901, 22684), (1802, 11342), (1819, 11236), (2809, 7276), (3604, 5671), (3638, 5618)]