20458528993

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1\times {\mathrm{101}}^1\times {\mathrm{281}}^1$

素因数の和:538

約数の個数: 64

約数和(自身を含む): 25349137920

約数和(自身を除く): 4890608927

約数列:

[1, 7, 29, 53, 67, 101, 203, 281, 371, 469, 707, 1537, 1943, 1967, 2929, 3551, 5353, 6767, 8149, 10759, 13601, 14893, 18827, 20503, 24857, 28381, 37471, 47369, 57043, 102979, 104251, 131789, 155237, 196243, 198667, 358651, 431897, 545983, 720853, 823049, 997831, 1086659, 1373701, 1504193, 1901527, 2510557, 3023279, 3821881, 5761343, 6984817, 10400879, 10529351, 13310689, 28937099, 43621597, 55144283, 72806153, 100780931, 202559693, 305351179, 386009981, 705466517, 2922646999, 20458528993]

約数ペア:

[(1, 20458528993), (7, 2922646999), (29, 705466517), (53, 386009981), (67, 305351179), (101, 202559693), (203, 100780931), (281, 72806153), (371, 55144283), (469, 43621597), (707, 28937099), (1537, 13310689), (1943, 10529351), (1967, 10400879), (2929, 6984817), (3551, 5761343), (5353, 3821881), (6767, 3023279), (8149, 2510557), (10759, 1901527), (13601, 1504193), (14893, 1373701), (18827, 1086659), (20503, 997831), (24857, 823049), (28381, 720853), (37471, 545983), (47369, 431897), (57043, 358651), (102979, 198667), (104251, 196243), (131789, 155237)]