81376490

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{307}}^1\times {\mathrm{2039}}^1$

素因数の和:2366

約数の個数: 32

約数和(自身を含む): 158336640

約数和(自身を除く): 76960150

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 307, 614, 1535, 2039, 3070, 3991, 4078, 7982, 10195, 19955, 20390, 26507, 39910, 53014, 132535, 265070, 625973, 1251946, 3129865, 6259730, 8137649, 16275298, 40688245, 81376490]

約数ペア:

[(1, 81376490), (2, 40688245), (5, 16275298), (10, 8137649), (13, 6259730), (26, 3129865), (65, 1251946), (130, 625973), (307, 265070), (614, 132535), (1535, 53014), (2039, 39910), (3070, 26507), (3991, 20390), (4078, 19955), (7982, 10195)]