86987780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{5569}}^1$

素因数の和:5660

約数の個数: 48

約数和(自身を含む): 202124160

約数和(自身を除く): 115136380

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 71, 110, 142, 220, 284, 355, 710, 781, 1420, 1562, 3124, 3905, 5569, 7810, 11138, 15620, 22276, 27845, 55690, 61259, 111380, 122518, 245036, 306295, 395399, 612590, 790798, 1225180, 1581596, 1976995, 3953990, 4349389, 7907980, 8698778, 17397556, 21746945, 43493890, 86987780]

約数ペア:

[(1, 86987780), (2, 43493890), (4, 21746945), (5, 17397556), (10, 8698778), (11, 7907980), (20, 4349389), (22, 3953990), (44, 1976995), (55, 1581596), (71, 1225180), (110, 790798), (142, 612590), (220, 395399), (284, 306295), (355, 245036), (710, 122518), (781, 111380), (1420, 61259), (1562, 55690), (3124, 27845), (3905, 22276), (5569, 15620), (7810, 11138)]