19428773

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{661}}^1$

素因数の和:717

約数の個数: 32

約数和(自身を含む): 26691840

約数和(自身を除く): 7263067

約数列:

[1, 7, 13, 17, 19, 91, 119, 133, 221, 247, 323, 661, 1547, 1729, 2261, 4199, 4627, 8593, 11237, 12559, 29393, 60151, 78659, 87913, 146081, 163267, 213503, 1022567, 1142869, 1494521, 2775539, 19428773]

約数ペア:

[(1, 19428773), (7, 2775539), (13, 1494521), (17, 1142869), (19, 1022567), (91, 213503), (119, 163267), (133, 146081), (221, 87913), (247, 78659), (323, 60151), (661, 29393), (1547, 12559), (1729, 11237), (2261, 8593), (4199, 4627)]