20213568395

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{193}}^1\times {\mathrm{251}}^1\times {\mathrm{4909}}^1$

素因数の和:5375

約数の個数: 32

約数和(自身を含む): 25924328640

約数和(自身を除く): 5710760245

約数列:

[1, 5, 17, 85, 193, 251, 965, 1255, 3281, 4267, 4909, 16405, 21335, 24545, 48443, 83453, 242215, 417265, 823531, 947437, 1232159, 4117655, 4737185, 6160795, 16106429, 20946703, 80532145, 104733515, 237806687, 1189033435, 4042713679, 20213568395]

約数ペア:

[(1, 20213568395), (5, 4042713679), (17, 1189033435), (85, 237806687), (193, 104733515), (251, 80532145), (965, 20946703), (1255, 16106429), (3281, 6160795), (4267, 4737185), (4909, 4117655), (16405, 1232159), (21335, 947437), (24545, 823531), (48443, 417265), (83453, 242215)]