20002972

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{337}}^1$

素因数の和:442

約数の個数: 48

約数和(自身を含む): 40884480

約数和(自身を除く): 20881508

約数列:

[1, 2, 4, 11, 19, 22, 38, 44, 71, 76, 142, 209, 284, 337, 418, 674, 781, 836, 1348, 1349, 1562, 2698, 3124, 3707, 5396, 6403, 7414, 12806, 14828, 14839, 23927, 25612, 29678, 47854, 59356, 70433, 95708, 140866, 263197, 281732, 454613, 526394, 909226, 1052788, 1818452, 5000743, 10001486, 20002972]

約数ペア:

[(1, 20002972), (2, 10001486), (4, 5000743), (11, 1818452), (19, 1052788), (22, 909226), (38, 526394), (44, 454613), (71, 281732), (76, 263197), (142, 140866), (209, 95708), (284, 70433), (337, 59356), (418, 47854), (674, 29678), (781, 25612), (836, 23927), (1348, 14839), (1349, 14828), (1562, 12806), (2698, 7414), (3124, 6403), (3707, 5396)]