64128740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{18973}}^1$

素因数の和:19008

約数の個数: 36

約数和(自身を含む): 145834164

約数和(自身を除く): 81705424

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 676, 845, 1690, 3380, 18973, 37946, 75892, 94865, 189730, 246649, 379460, 493298, 986596, 1233245, 2466490, 3206437, 4932980, 6412874, 12825748, 16032185, 32064370, 64128740]

約数ペア:

[(1, 64128740), (2, 32064370), (4, 16032185), (5, 12825748), (10, 6412874), (13, 4932980), (20, 3206437), (26, 2466490), (52, 1233245), (65, 986596), (130, 493298), (169, 379460), (260, 246649), (338, 189730), (676, 94865), (845, 75892), (1690, 37946), (3380, 18973)]