71333890

素因数分解:

$2^1\times 5^1\times {\mathrm{401}}^1\times {\mathrm{17789}}^1$

素因数の和:18197

約数の個数: 16

約数和(自身を含む): 128728440

約数和(自身を除く): 57394550

約数列:

[1, 2, 5, 10, 401, 802, 2005, 4010, 17789, 35578, 88945, 177890, 7133389, 14266778, 35666945, 71333890]

約数ペア:

[(1, 71333890), (2, 35666945), (5, 14266778), (10, 7133389), (401, 177890), (802, 88945), (2005, 35578), (4010, 17789)]