20996858116

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{71}}^1\times {\mathrm{437471}}^1$

素因数の和:437572

約数の個数: 36

約数和(自身を含む): 40348917504

約数和(自身を除く): 19352059388

約数列:

[1, 2, 4, 13, 26, 52, 71, 142, 169, 284, 338, 676, 923, 1846, 3692, 11999, 23998, 47996, 437471, 874942, 1749884, 5687123, 11374246, 22748492, 31060441, 62120882, 73932599, 124241764, 147865198, 295730396, 403785733, 807571466, 1615142932, 5249214529, 10498429058, 20996858116]

約数ペア:

[(1, 20996858116), (2, 10498429058), (4, 5249214529), (13, 1615142932), (26, 807571466), (52, 403785733), (71, 295730396), (142, 147865198), (169, 124241764), (284, 73932599), (338, 62120882), (676, 31060441), (923, 22748492), (1846, 11374246), (3692, 5687123), (11999, 1749884), (23998, 874942), (47996, 437471)]