19813820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{76207}}^1$

素因数の和:76229

約数の個数: 24

約数和(自身を含む): 44810304

約数和(自身を除く): 24996484

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 76207, 152414, 304828, 381035, 762070, 990691, 1524140, 1981382, 3962764, 4953455, 9906910, 19813820]

約数ペア:

[(1, 19813820), (2, 9906910), (4, 4953455), (5, 3962764), (10, 1981382), (13, 1524140), (20, 990691), (26, 762070), (52, 381035), (65, 304828), (130, 152414), (260, 76207)]