19001801

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{173}}^1$

素因数の和:281

約数の個数: 32

約数和(自身を含む): 25256448

約数和(自身を除く): 6254647

約数列:

[1, 7, 13, 17, 71, 91, 119, 173, 221, 497, 923, 1207, 1211, 1547, 2249, 2941, 6461, 8449, 12283, 15691, 15743, 20587, 38233, 85981, 109837, 159679, 208811, 267631, 1117753, 1461677, 2714543, 19001801]

約数ペア:

[(1, 19001801), (7, 2714543), (13, 1461677), (17, 1117753), (71, 267631), (91, 208811), (119, 159679), (173, 109837), (221, 85981), (497, 38233), (923, 20587), (1207, 15743), (1211, 15691), (1547, 12283), (2249, 8449), (2941, 6461)]