20831188

素因数分解:

$2^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{409}}^1$

素因数の和:544

約数の個数: 48

約数和(自身を含む): 44634240

約数和(自身を除く): 23803052

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 68, 107, 119, 214, 238, 409, 428, 476, 749, 818, 1498, 1636, 1819, 2863, 2996, 3638, 5726, 6953, 7276, 11452, 12733, 13906, 25466, 27812, 43763, 48671, 50932, 87526, 97342, 175052, 194684, 306341, 612682, 743971, 1225364, 1487942, 2975884, 5207797, 10415594, 20831188]

約数ペア:

[(1, 20831188), (2, 10415594), (4, 5207797), (7, 2975884), (14, 1487942), (17, 1225364), (28, 743971), (34, 612682), (68, 306341), (107, 194684), (119, 175052), (214, 97342), (238, 87526), (409, 50932), (428, 48671), (476, 43763), (749, 27812), (818, 25466), (1498, 13906), (1636, 12733), (1819, 11452), (2863, 7276), (2996, 6953), (3638, 5726)]