20575880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{39569}}^1$

素因数の和:39593

約数の個数: 32

約数和(自身を含む): 49858200

約数和(自身を除く): 29282320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 39569, 79138, 158276, 197845, 316552, 395690, 514397, 791380, 1028794, 1582760, 2057588, 2571985, 4115176, 5143970, 10287940, 20575880]

約数ペア:

[(1, 20575880), (2, 10287940), (4, 5143970), (5, 4115176), (8, 2571985), (10, 2057588), (13, 1582760), (20, 1028794), (26, 791380), (40, 514397), (52, 395690), (65, 316552), (104, 197845), (130, 158276), (260, 79138), (520, 39569)]