257013040

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{139681}}^1$

素因数の和:139717

約数の個数: 40

約数和(自身を含む): 623540448

約数和(自身を除く): 366527408

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 368, 460, 920, 1840, 139681, 279362, 558724, 698405, 1117448, 1396810, 2234896, 2793620, 3212663, 5587240, 6425326, 11174480, 12850652, 16063315, 25701304, 32126630, 51402608, 64253260, 128506520, 257013040]

約数ペア:

[(1, 257013040), (2, 128506520), (4, 64253260), (5, 51402608), (8, 32126630), (10, 25701304), (16, 16063315), (20, 12850652), (23, 11174480), (40, 6425326), (46, 5587240), (80, 3212663), (92, 2793620), (115, 2234896), (184, 1396810), (230, 1117448), (368, 698405), (460, 558724), (920, 279362), (1840, 139681)]