68850520

素因数分解:

$2^3\times 5^1\times {\mathrm{1303}}^1\times {\mathrm{1321}}^1$

素因数の和:2635

約数の個数: 32

約数和(自身を含む): 155149920

約数和(自身を除く): 86299400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1303, 1321, 2606, 2642, 5212, 5284, 6515, 6605, 10424, 10568, 13030, 13210, 26060, 26420, 52120, 52840, 1721263, 3442526, 6885052, 8606315, 13770104, 17212630, 34425260, 68850520]

約数ペア:

[(1, 68850520), (2, 34425260), (4, 17212630), (5, 13770104), (8, 8606315), (10, 6885052), (20, 3442526), (40, 1721263), (1303, 52840), (1321, 52120), (2606, 26420), (2642, 26060), (5212, 13210), (5284, 13030), (6515, 10568), (6605, 10424)]