19957795

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{271}}^1$

素因数の和:403

約数の個数: 32

約数和(自身を含む): 28514304

約数和(自身を除く): 8556509

約数列:

[1, 5, 11, 13, 55, 65, 103, 143, 271, 515, 715, 1133, 1339, 1355, 2981, 3523, 5665, 6695, 14729, 14905, 17615, 27913, 38753, 73645, 139565, 193765, 307043, 362869, 1535215, 1814345, 3991559, 19957795]

約数ペア:

[(1, 19957795), (5, 3991559), (11, 1814345), (13, 1535215), (55, 362869), (65, 307043), (103, 193765), (143, 139565), (271, 73645), (515, 38753), (715, 27913), (1133, 17615), (1339, 14905), (1355, 14729), (2981, 6695), (3523, 5665)]