19801288

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{4051}}^1$

素因数の和:4117

約数の個数: 32

約数和(自身を含む): 40844160

約数和(自身を除く): 21042872

約数列:

[1, 2, 4, 8, 13, 26, 47, 52, 94, 104, 188, 376, 611, 1222, 2444, 4051, 4888, 8102, 16204, 32408, 52663, 105326, 190397, 210652, 380794, 421304, 761588, 1523176, 2475161, 4950322, 9900644, 19801288]

約数ペア:

[(1, 19801288), (2, 9900644), (4, 4950322), (8, 2475161), (13, 1523176), (26, 761588), (47, 421304), (52, 380794), (94, 210652), (104, 190397), (188, 105326), (376, 52663), (611, 32408), (1222, 16204), (2444, 8102), (4051, 4888)]