257951445

素因数分解:

$3^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{251}}^1\times {\mathrm{523}}^1$

素因数の和:913

約数の個数: 32

約数和(自身を含む): 418328064

約数和(自身を除く): 160376619

約数列:

[1, 3, 5, 15, 131, 251, 393, 523, 655, 753, 1255, 1569, 1965, 2615, 3765, 7845, 32881, 68513, 98643, 131273, 164405, 205539, 342565, 393819, 493215, 656365, 1027695, 1969095, 17196763, 51590289, 85983815, 257951445]

約数ペア:

[(1, 257951445), (3, 85983815), (5, 51590289), (15, 17196763), (131, 1969095), (251, 1027695), (393, 656365), (523, 493215), (655, 393819), (753, 342565), (1255, 205539), (1569, 164405), (1965, 131273), (2615, 98643), (3765, 68513), (7845, 32881)]