71084780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{21031}}^1$

素因数の和:21066

約数の個数: 36

約数和(自身を含む): 161651952

約数和(自身を除く): 90567172

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 676, 845, 1690, 3380, 21031, 42062, 84124, 105155, 210310, 273403, 420620, 546806, 1093612, 1367015, 2734030, 3554239, 5468060, 7108478, 14216956, 17771195, 35542390, 71084780]

約数ペア:

[(1, 71084780), (2, 35542390), (4, 17771195), (5, 14216956), (10, 7108478), (13, 5468060), (20, 3554239), (26, 2734030), (52, 1367015), (65, 1093612), (130, 546806), (169, 420620), (260, 273403), (338, 210310), (676, 105155), (845, 84124), (1690, 42062), (3380, 21031)]