31224380

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{1999}}^1$

素因数の和:2090

約数の個数: 48

約数和(自身を含む): 72576000

約数和(自身を除く): 41351620

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 71, 110, 142, 220, 284, 355, 710, 781, 1420, 1562, 1999, 3124, 3905, 3998, 7810, 7996, 9995, 15620, 19990, 21989, 39980, 43978, 87956, 109945, 141929, 219890, 283858, 439780, 567716, 709645, 1419290, 1561219, 2838580, 3122438, 6244876, 7806095, 15612190, 31224380]

約数ペア:

[(1, 31224380), (2, 15612190), (4, 7806095), (5, 6244876), (10, 3122438), (11, 2838580), (20, 1561219), (22, 1419290), (44, 709645), (55, 567716), (71, 439780), (110, 283858), (142, 219890), (220, 141929), (284, 109945), (355, 87956), (710, 43978), (781, 39980), (1420, 21989), (1562, 19990), (1999, 15620), (3124, 9995), (3905, 7996), (3998, 7810)]