81385780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{59}}^2\times {\mathrm{167}}^1$

素因数の和:301

約数の個数: 72

約数和(自身を含む): 199882368

約数和(自身を除く): 118496588

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 59, 70, 118, 140, 167, 236, 295, 334, 413, 590, 668, 826, 835, 1169, 1180, 1652, 1670, 2065, 2338, 3340, 3481, 4130, 4676, 5845, 6962, 8260, 9853, 11690, 13924, 17405, 19706, 23380, 24367, 34810, 39412, 48734, 49265, 68971, 69620, 97468, 98530, 121835, 137942, 197060, 243670, 275884, 344855, 487340, 581327, 689710, 1162654, 1379420, 2325308, 2906635, 4069289, 5813270, 8138578, 11626540, 16277156, 20346445, 40692890, 81385780]

約数ペア:

[(1, 81385780), (2, 40692890), (4, 20346445), (5, 16277156), (7, 11626540), (10, 8138578), (14, 5813270), (20, 4069289), (28, 2906635), (35, 2325308), (59, 1379420), (70, 1162654), (118, 689710), (140, 581327), (167, 487340), (236, 344855), (295, 275884), (334, 243670), (413, 197060), (590, 137942), (668, 121835), (826, 98530), (835, 97468), (1169, 69620), (1180, 68971), (1652, 49265), (1670, 48734), (2065, 39412), (2338, 34810), (3340, 24367), (3481, 23380), (4130, 19706), (4676, 17405), (5845, 13924), (6962, 11690), (8260, 9853)]